Don't be discouraged．___things as they are and you will enjoy every day of your life．
| A．Taking | B．To take | C．Take | D．Taken |
At the beginning of a speech, it is very important to grab the audience's attention and make them interested in ____ you have to say．
| A．what | B．which | C．that | D．who |
The Sanlu Milk Powder event is a clear indication that food safety is a big problem; nobody can ___ all foods are secure to us, but we are sure that the situation is turning for the better．
| A．acknowledge | B．guarantee | C．identity | D．clarify |
—I am going to travel to America．Would you consider telling me about your experiences there?
—__．Let's discuss it over dinner．
| A．That's all right | B．Go ahead |
| C．By all means | D．It just depends |
I don't think the experiment is ___ failure, because it has provided us with ___valuable experience for our future tests.
| A．不填; 不填 | B．不填; a | C．a; a | D．a; 不填 |