16. It’s a fine day. Let’s go fishing, ________?
A. won’t we B. will we C. don’t we D. shall we
17. He missed ________ gold in the high jump, but will get ________ second chance in the long jump.
A. the; the B. /; a C. the; a D. a; /
18. He said he would start very early in the morning ________ miss the train to Beijing.
A. not so as to B. so not as to C. so as to not D. so as not to