A thunder usually follows lightning by five seconds for every mile between the flash and the observer.
A.A thunder 
B.seconds
C.for every mile
D.between

_______(42)
A.speaking
B.informing
C.telling
D.saying

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
If orders keep coming in like this, I'll have to _______ more staff.
A.add in
B.give up
C.take on
D.gain on

Choose the word or phrase marked A, B, C, or D that best completes each sentence.
Many people___________ that natural resources will never be used up.
A.view                      
B.consider        
C.believe      
D.regard

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Hurry up, or they ______ serving meals by the time we get to the restaurant.
A.stopped
B.will have stopped
C.are stopping
D.would stop

A.exchange
B.reach
C.chance
D.chemistry

Choose the word or phrase that best fits the blank space in each sentence or substitutes for the underlined word or phrase.
Rarely ______ last longer than an hour.
A.do tornadoes
B.tornadoes 
C.tornadoes that      
D.tornadoes do

Choose the best answer to each of the following questions
He hurried _________ he wouldn’t be late for class.
A.since
B.as if
C.unless
D.so that

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.
Huong: “That millions of people attended General Vo Nguyen Giap’s funeral made a special impression on almost every foreigner.”
Lan: “______”
A.My pleasure  
B.Me neither  
C.I’m afraid I can’t  
D.I’ll say

_______ daily promotes physical as well as emotional well-being in people of all ages.
A.Having exercised   
B.Those who exercise      
C.For exercising               
D.Exercising