题目内容：

Complete the following sentences and make sure each pair shares the same or similar meaning. Use one word for each blank.

1.He said he would meet us at the bus stop, but when we arrived there, he had gone.

He said he would meet us at the bus stop, but when we arrived there, he was _____ to be seen.

2.It is dangerous to cross the road when the traffic lights are red.

It is dangerous to _____ _____ the road when the traffic lights are red.

3.It’s been nice talking to you, but I really must leave now.

It’s been nice talking to you, but I really must _____ _____ now.

4.The box is so heavy that I can’t carry it to my bedroom.

The box is _____ heavy for me _____ carry it to my bedroom.

5.We felt that something terrible was going to happen.

We _____ _____ _____ that something terrible was going to happen.