问题

uld have helped us yesterday,but he_______________.

A:was busy busy
B:is busy
C:had been busy
D:will be busy

正确答案是：

同类题型

I have to go to school by bus because my bicycle _____

Mary, remember to come and see us next time you’re in town.—__________.

Why don’t you like fishing—Fishing a hobby needs much patience, but I’m not patient at all.

It wasn’t until the 2010 CCTV Spring Festival Gals（央视春晚）

The bridge is the river.