There is nothing ---but---down and wait for him to come backA to _英语解答

There is nothing ---but---down and wait for him to come back
A to be done ,to sit B to do ,sit
C done,to sit D to do,sit

人气：214 ℃　时间：2019-10-19 17:05:21

解答

B D都可以（因为他们一模一样）.noting to do .A前面这个表达因该可以,但是to sit就有点问题.可以看到sit后面有个并列连接词and,而and 后的wait是原形的（可以看出sit和wait是两个平行的词汇）.所以保持句子平衡,选sit