The reporters of all the leading newspapers _____ the trade talks between China and the United States．
| A．printed | B．published | C．covered | D．interviewed |
Criticism is highly necessary ____it helps to monitor the progress of our work．
| A．in which | B．for which | C．so that | D．in that |
In 1720,Bach’s wife suddenly died, ______him with four children．
| A．leaving | B．to leave | C．left | D．had left |
The front door ________ open．I'll have it repaired．
| A．mustn't | B．shouldn't | C．may not | D．won't |
___Obama was elected president of the USA is a big success for the blacks in America．
| A．\ | B．That | C．What | D．As |
—Have you heard that eleven people were killed on the spot in the highway traffic accident?
—Yes, whatshock it is to hear news．
| A．a; a | B．a; the | C．/; / | D．the;/ |