______ on this report the English government decided to ask Captain Cook to go and look for this continent.
A. Having based B. Basing C. Based D. To be based
Those who show respect for others will be respected ________.
A. in response B. in return C. in turn D. in place.
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.
