问题

When _____ help, one often says “Thank you.” or “it’skind of you”
A:offering
B:to offer
C:to be offered
D:offered
B:to offer
C:to be offered
D:offered
正确答案是:
同类题型
Are these your coats — Yes, ___________ are.
How many _______do you have —Let me see, my father has two brothers.
The door _______ open, no matter how hard she pushed.
__________ interesting story it is, and I am so _____________ in it.
Every time when something ____ me, I turn on theradio and listen to music.