1 . At one point we were so high that we found ourselves _______________ (cycle) through clouds.

2 . The parents, whose child has been lost for several days, are s______ a lot. (根据首字母提示单词拼写)

3 . 语法填空
1. I noticed a man ________ (sit) at the front.
2. “In the beginning, there was only a very small amount of unfairness in the world, but everyone added a little, always________(think) that it was only small and not very important, and look where we have ended up today.”
3. While she was getting me ________(settle) into a tiny but clean room, the head of the village was tying up his horse to my car...

4 . I smell something ________ in the kitchen. Can I call you back in a minute?

A．burning

B．burnt

C．to burn

D．to be burnt