Darwin counted 225 flowering plants, ______ he collected and brought home 193.
A. which B. for which C. in which D. of which
He came to my class every week, but his attitude _______he was not really interested in the subject.
A. expressed B. described C. explained D. suggested
Why didn't you tell me there was no meeting today? I all the way here through the heavy snow.
A．needn't have driven B．can't have driven
C．mustn't have driven D．shouldn't have driven
The old man, _______ abroad for twenty years , is on the way back to his motherland.
A. to work B. working C. to have worked D. having worked.
Zheng He’s first stop during the expedition was in _______ is a part of Vietnam today.
A. where B. what C. which D. that
People believe that mutual understanding _______ a happy marriage.
A. takes to B. makes for C. brings down D. depends on
