If he doesn’t apologize, I will never invite him here again.
A.Unless he apologizes, then I will never invite him here again.
B.Unless he apologizes, otherwise I will never invite him here again.
C.Unless he apologizes, or I will never invite him here again.
D.Unless he apologizes, I will never invite him here again.

I regret not going to the airport to say goodbye to her.
A.I wish I had gone to the airport to say goodbye to her.
B.I wish I would go to the airport to say goodbye to her.
C.I wish I went to the airport to say goodbye to her.
D.I wish I would have gone to the airport to say good bye to her.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
When reaching the top of the hill, __________.
A.below us extended the sea
B.the sea came into view
C.it was the sea that extended below us
D.we suddenly caught sight of the sea

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
To solve this problem, it is advisable ________.
A.that a drastic measure be adopted
B.that a drastic measure is adopted
C.a drastic measure to be adopted
D.that to adopt a drastic measure

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
______________, Sir Isaac Newton described the laws of gravitation.
A.A seventeenth-century scientist
B.When was a seventeenth-century scientist
C.Was a seventeenth-century scientist
D.Who was a seventeenth-century scientist

Why do you say the project should be changed even more? Personally, I cannot see the __________of introducing so many alternations.
A.ground
B.reason
C.point
D.clue

- Mrs. Brown: Taxi! Taxi! - Taxi driver: ______
A.It’s my duty to drive you.
B.Where to, Madam?
C.Fancy meeting you here.
D.Where are you?

The tiny bells on the Christmas tree were ______ in the draught.
A.clanging
B.tinkling
C.gurgling
D.ringing

______, Edison didn’t have much schooling and he was taught by his mother.
A.When was a boy
B.A boy was when
C.Was a boy
D.When a boy

Mach numbers describe the velocity of airplanes ______ over the speed of sound.
A.have moved
B.move
C.moving
D.moved