试题:

I don’t allow __ in my drawing-room. I don’t allow my son __ at all.
A.to smoke; smokingB.smoking; to smoke
C.to smoke; to smokeD.smoking; smoking

答案:

我来补答
B
考查短语:allow doing 允许做某事,allow sb to do 允许某人做某事,句意:我不允许在画室吸烟,我根本不允许我的儿子吸烟。所以选B。
 
 
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这些题目你会做吗?