15.A number of books ______ been stolen from the library since the beginning of this term and the number _____ as large as 500.
| A．have; are | B．has; is | C．has; are | D．have; is |
- Look! It’s raining again.
-- Why _________it rain on Sundays? We are always staying inside! What a nuisance!.
| A．need | B．can | C．must | D．should |
If I hadn’t stood under the ladder to catch you when you fell, you _________ now.
| A．wouldn’t be smiling | B．couldn’t have smiled | C．won’t smile | D．didn’t smile |
My mother opened the drawer to _________ the knives, forks and spoons.
| A．put away | B．put up | C．put on | D．put together |
_________, the car could not be started.
| A．Having lost the key | B．He lost the key | C．The key was missed | D．The key lost |
Though having lived abroad for years, many Chinese still _________ the traditional customs.
| A．perform | B．support | C．possess | D．observe |