—Peter looked tired and a little absent-minded in class．
—He _____ too late．
| A．may stay up | B．could stay up |
| C．should have stayed up | D．must have stayed up |
21. Whether you believe what he said _________ what he does in the future.
| A．lives on | B．depends on | C．calls on | D．carries on |
20. His parents were teachers in that school, _______ lost their lives in order to save
their students in the earthquake.
| A．none of them | B．both of them | C．none of whom | D．both of whom |
19. __________ a chance, we will visit Edinburgh a second time.
| A．To be given | B．Given | C．Giving | D．Having given |
18. — Hi, Kathy. We’re going to have a party this Saturday. Will you come?
— __________. What time?
| A．I suppose so | B．I’d love to | C．I think so | D．I like it |
17. It’s said ______ ______ was everything _______ Mr. Professor could tell us.
| A．that; what; all | B．what; that; that |
| C．that; that; that | D．what; that; what |