问题描述：
关于语法的,我很头疼.哎.
16.Most of the artisis___to the dinner party were from South Africa.
A.to invite.B.being invited.C.invited.D.had been invited.
17.Little___that i was never able to see that kind old man again.
A.i thought B.was i thinking.C.i would think.D.did i think.
18.why haven'tyou taken the medicine?It ___before dinner.
A.should have been taken B.is taken.C.has been taken.D.should have taken.
16.Most of the artisis___to the dinner party were from South Africa.
A.to invite.B.being invited.C.invited.D.had been invited.
17.Little___that i was never able to see that kind old man again.
A.i thought B.was i thinking.C.i would think.D.did i think.
18.why haven'tyou taken the medicine?It ___before dinner.
A.should have been taken B.is taken.C.has been taken.D.should have taken.
问题解答：
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