问题

I’m sorry I didn’t phone you, but I’ve been very busy_______ the past few weeks.

A:to go; to do
B:to go; doing
C:going; to do
D:going; doing;

正确答案是：

同类题型

hat’s your idea— My opinion is _____, _____ happens, we should not stop the reform.

1—I’m going to Hainan onvacation next week.– __.

What do you think of your parents? —They always let me do ________ I think I should do.

He is very good __________ the children.

What upsets him?—–_____ his computer is out of order．