________ hard he tried, he could not change his wife’s mind.
| A．However | B．Whatever | C．As | D．No matter what |
He suggested that a new library_________ near the key high school.
| A．is built | B．was built | C．be built | D．should build |
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 |