问题

He was often seen _________ with charity work lastyear.
A:to help
B:helped
C:helping
D:help
B:helped
C:helping
D:help
正确答案是:
同类题型
There was a (an) __________ silence between us after we were left alone in the sitting-room.
Hurry up,or we’ll belate.Take your time—it’s just ______short distance fromhere to ________cinema.
________ the teachers is about 300 in our schooland it is becoming_____________.
everything to go wrong in advance, ________ youmay feel at a loss when it does