When __________ he supposed to arrive yesterday?

Why haven’t you asked her to come here?—She _______ an important experiment when I found her and she _____ it.

Is this man your friend?一Yes，．

What do you think of ____________ 8th China Flower Expo in our city?— It was ____________ big success, I think.

It is his horse , according to the old man , _______ saved him from the trap.