It is no good ______ the flowers to often, for a lillte water is enough for them.
| A．watering | B．to water | C．watered | D．waters |
. He hesitated about the brake, otherwise the accident ______.
| A．could have been avoided | B．could have avoided |
| C．would have avoid | D．should have been avoided |
The population of China ______ to many times what it was in 1949, and most of its population ______ farmers.
| A．have grown; are | B．has grown; are | C．has grown; is | D．have grown; is |
Please tell me ______ you would like to have your coffee --- black or white?
| A．how | B．what | C．when | D．which |
______ he was absent, I was expected to take his place greatly surprised me, for I didn’t have much experience.
| A．If | B．If that | C．That if | D．That |
. You’d better start it right away ______ you forget it.
| A．in case of | B．unless | C．before | D．since |