If the car you rent is not satisfactory, you can always ________ it for another.
A. charge B. exchange C. select D. advertise
The manager's demand was that the data ____________ e-mailed to Mr. Andrew without delay.
A. should be B. would be C. were D. had been
－When I first got to Harvard, my terrible English was a burden to me.
－Oh, dear, it ________ a struggle for you to keep up with other students.
A. might be B. can be
C. should have been D. must have been
It would be a big surprise to Charles if he ____________ the good news that he has won the scholarship.
A. know B. knows C. knew D. had known
In the last two years, the program ________ thousands of children who would otherwise have died.
A. is saving B. saves C. had saved D. has saved
It is the quality of the food rather than the quantity ________ matters.
A. that B. which C. what D. how
