The biggest problem for most plants,which_______just get up and run away when threatened,is that animals like to eat them.

My MP4 player isn’t in my bag.Where _______ I have put it?

—She looks very happy.She_______have passed the exam.
—I guess so.It’s not difficult after all.

I told your friend how to get to the hotel,but perhaps I___have driven her there.

The teacher_____have thought Johnson was worth it or she wouldn’t have wasted time on him,I suppose.

—What do you think we can do for our aged parents?
—You___do anything except to be with them and be yourself.

_____ U2, the Irish rock band from Dublin perform a concert in Beijing, tell me in advance.

—Turn off the TV,Jack._______ your homework now?
—Mum,just ten more minutes,please.

The doctor recommended that you          swim after eating a large meal.
A  wouldn't    B couldn't     C needn't     D shouldn't 

It was announced that only when the fire was under control ___ to return to their homes.