_________he is the son of the boss, he started from the lowest position as a common employee.
A. Unless B. Since C. While D. As
Following the guide, we went into a house, _________ wall hung a picture of Einstein.
A. on its B. on that C. on whose D. on which
Mr. Keller _________ forty cigarettes a day until he gave it up.
A. had smoked B. smokes C. have smoked D. smoked
—Excuse me, can you spare me a few minutes?
—_________?
A. What’s on B. What’s up C. What is it D. What’s more
Those farmers who _________ move from place to place with their animals in the past have moved into new houses at last.
A. could B. might C. would D. should
_________either the twins or John going with me when the play _________here?
A. Is; is put on B. Are; is put on C. Is; is put up D. Are; is put up
