—I called you many times yesterday morning, but I couldn’t get through.
—Oh. My brother ______on the phone all the time!
| A．was talking | B．has been talking | C．has talked | D．talked |
Effective measures should be taken to ______ the rare species _______ being over-killed by human beings.
| A．keep; against | B．prevent; from |
| C．stop; against | D．protect; from |
A good article should not only be rich in the use of language, but also it ought to be ________ organized.
| A．personally | B．faithfully | C．unexpectedly | D．logically |
I’m sorry you’ve been waiting for so long, but it’ll still be some time _______ Brian gets back.
| A．since | B．after | C．when | D．before |
My glasses，________I was like a blind man, fell to the ground and broke.
| A．which | B．with which | C．without that | D．without which |
The computer system________suddenly while he was searching for information on the Internet.
| A．broke down | B．broke out | C．broke up | D．broke in |