问题

Why not ______ the old women? They need us.
A:help
B:helping
C:to help
D:helped
B:helping
C:to help
D:helped
正确答案是:
同类题型
Tom realized that he ________ his physics book at home when he reached school.
I ____ Mr. Smith since he moved to Shanghai.
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If you ___him tomorrow,please ask him if he____ to work on the farm with us.