If you have any fault to find with any one, tell him, not others, of what you complain. There is no more dangerous experiment than that of ___________ to do one thing before a man's face and another behind his back. We should say and do nothing to the _______ of any one. It is not only a matter of _________, but also the path of peace and honor.

(As long as) you follow the news every day, you won't lose touch with the time.

A. 对
B. 错

Our team is working on (a new generation) of safer skateboards.

A. 对
B. 错

Now, a (single) computer can work out all the data in a very short time.

A. 对
B. 错

Whenever I see him, I cannot but (feel surprised) at his strange hair style.

A. 对
B. 错

Do I have to remember all the (traffic rules) to pass the driving test?

A. 对
B. 错

Though faced with great difficulties, 65-year-old Thomas would not ________ karate learning.

A. give up
B. give out
C. give back
D. give in

________ I wanted to find out first was when he came back last Saturday evening.

A. That
B. Those
C. What
D. Which

________ you watered the little tree frequently, it ________ as tall as I am now.

A. Had, would be
B. Have, is
C. If, would be
D. Should, could be