For many years we have already used.............. which is produced by the fall of water to make electricity.
A.hydro power
B.air energy
C.wind energy
D.solar energy

Choose the best answer to each of the following questions.
There________.
A.comes my bus
B.does my bus come
C.my bus come
D.did my bus come

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.
We can go (A) along this road as (B) they have built already (C) a bridge across the (D) river.
A.can go
B.as
C.built already
D.the

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
It’s possible that Joanna didn’t receive my message.
A.Joanna shouldn’t have received my message.
B.Joanna needn’t have received my message.
C.Joanna mightn’t have received my message.
D.Joanna can’t have received my message.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
Expert thought that infected chickens were responsible for the outbreak of flu.
A.It is thought that infected chickens were responsible for the outbreak of flu.
B.Infected chickens were thought to be in charge with the outbreak of flu.
C.Infected chickens were thought to be in charge of the outbreak of flu.
D.Infected chickens are thought to be responsible for the outbreak of flu.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
My sister didn’t leave the house key. As a result, I can’t be cooking lunch now.
A.If my sister has left the house key, I could have been cooking lunch now.
B.If my sister had left the house key, I could have been cooking lunch now.
C.If my sister had left the house key, I could be cooking lunch now.
D.If my sister left the house key, I could be cooking lunch now.

A.brochure
B.effect
C.humid
D.notice

A.delicious
B.available
C.production
D.photograph

A.comfortable
B.resident
C.facility
D.specialty

Today we oil, which is used as fuel in cars, machines .................more than any other fuel.
A.depend on
B.rely on
C.trust in
D.Both a and b