Finish each of the following sentences in such a way that it means exactly the same as the sentence printed before it
He had no idea how difficult the task would be until he was half way through it.
A.Only when  he was half way through the task did he realize how difficult it was.
B.Only when  he were half way through the task did he realize how difficult it was.
C.Only when  he was half way through the task did he realize how difficult it had been.
D.Only when  he was half way through the task had he realized how difficult it was.

V. Read the passage carefully and choose the correct answer.
Recreational diving or sport diving is a type of diving that uses scuba equipment for the purpose of leisure and enjoyment. In some diving circles, the term "recreational diving" is used in contradistinction to "technical diving", a more demanding aspect of the sport which requires greater levels of training, experience and equipment.
Recreational scuba diving grew out of related activities such as snorkeling and underwater hunting. For a long time, recreational underwater excursions were limited by the amount of breath that could be held. However, the invention of the aqualung in 1943 by Jacques-Yves Cousteau and its development over subsequent years led to a revolution in recreational diving. However, for much of the 1950s and early 1960s, recreational scuba diving was a sport limited to those who were able to afford or make their own kit, and prepared to undergo intensive training to use it. As the sport became more popular, manufacturers became aware of the potential market, and equipment began to appear that was easy to use, affordable and reliable. Continued advances in' SCUBA technology, such as buoyancy compensators, modern diving regulators, wet or dry suits, and dive computers, increased the safety, comfort and convenience of the gear encouraging more people to train and use it.
Until the early 1950s, navies and other organizations performing professional diving were the only providers of diver training, but only for their own personnel and only using their own types of equipment. There were no training courses available to civilians who bought the first scuba equipment. Professional instruction started in 1959 when the non-profit National Association of Underwater Instructors was formed.
Further developments in technology have reduced the cost of training and diving. Scuba-diving has become a popular leisure activity, and many diving locations have some form of dive shop presence that can offer air fills, equipment and training. In tropical and sub-tropical parts of the world, there is a large market in holiday divers, who train and dive while on holiday, but rarely dive close to home. Generally, recreational diving depths are limited to a maximum of between 30 and 40 meters (100 and 130 feet), beyond which a variety of safety issues make it unsafe to dive using recreation diving equipment and practices, and specialized training and equipment for technical diving are needed.
Recreational underwater excursions used to be limited _______.
A.as underwater hunting was banned
B.because the necessary amount of breath was too expensive to afford
C.because divers could not take enough amount of breath with them
D.because the necessary amount of breath was too heavy to bring

The word "generated" in line 24 is closest in meaning to _________.
A.caused    
B.estimated        
C. assisted     
D.requested

Choose one word or phrase – (A, B, C or D) - that best completes the sentences  from questions 7 to 22:
Before I started the car, all of the passengers _________________ their seat belts.
A.have buckled 
B.had buckled  
C.will buckle 
D.was buckling

Read the passage and choose the best answer for each blank.
More and more young people are (26)………….voluntary work abroad. The wild variety of jobs and destinations available is making it an increasingly attractive option for those who have just left school and have a year free before university. Many choose to spend these twelve months working in poor countries. There they will earn little (27)………………no money. But they will be doing something useful – and enjoying the experience.
The work may (28)………..of helping the local communities, for example by helping to build new road or provide water supplies to isolated rural villages. Other projects may concentrate more on conservation or environmental protection. (29)…………..kind of job it is, it is certain to be (30)……..and worthwhile, and an experience that will never be forgotten.
(27) 
A.with
B.but
C.or
D.and

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
By the end of last March, I _______ English for five years.
A.had been studied        
B.had been studying
C.will have been studying              
D.will have studied

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Our Spanish teacher would prefer us spending more time in the laboratory practicing our pronunciation.
A.spending
B.practicing
C.us
D.in the

Gifts normally exchange at the beginning of meetings with Japanese and should be given and received with both hands.
A.normally exchange
B.meetings
C.should be given
D.both hands

Mark the letter A, B, C or D to indicate the sentences which is closest in meaning to the given one.
Many people think Steve stole the money.
A.It was not Steve who stole the money.     
B.Many people think the money is stolen by Steve.
C.Steve is thought to have stolen the money.      
D.The money is thought to be stolen by Steve.

The word "assumption" in paragraph 2 is closest in meaning to _______.
A.regulation                           
B.belief                                  
C.contract                              
D.confusion