--- Ring me at six tomorrow morning, will you?
--- Why that early? I ______ .
| A．will be sleeping | B．have slept | C．have been sleeping | D．will sleep |
–Have you handed in your schoolwork yet?
--Yes, I have. I guess it ________ now.
| A．has graded | B．is graded | C．is being graded | D．is grading |
He dived in the water and _____ to search for his girlfriend’s lost gold ring.
| A．caught his breath | B．held his breath | C．lost his breath | D．took breath |
The light in his office is out. He_________ left for home.
| A．must have | B．must have been | C．should have | D．should have been |
If you are in a country ______they don’t speak your language，you can show the address to the taxi driver.
| A．which | B．where | C．what | D．when |
_________money has been invested to promote the traffic conditions of this city.
| A．A plenty of | B．A large amount of |
| C．A great number of | D．A large sum |