With more forests being destroyed, huge quantities of good earth _______ each year.
| A．is washing away | B．is being washed away |
| C．are washing away | D．are being washed away |
Oh, I’m not feeling well in the stomach. I _________ so much mushroom this morning.
| A．shouldn’ t eat | B．musn’t have eaten | C．mustn’t eat | D．shouldn’t have eaten |
—Is Pro.Smith giving the speech today?
—It__________ be him. He is abroad right now.
| A．can’t | B．needn’t | C．won’t | D．mustn’t |
My sister met him at Ningbo Grand Theatre yesterday afternoon, so he your lecture.
| A．couldn’t attend | B．mustn’t have attended |
| C．shouldn’t attend | D．couldn’t have attended |
---Did they have a good time at the party?
---Judging by their smiles, they _________ have enjoyed themselves.
| A．might | B．must | C．could | D．would |
That little boy can pick up a tune immediately on the violin; he really has a _____for music.
| A．power | B．energy | C．intelligence | D．gift |