-----Alice looks blue today.
-----Yes, I asked her, but she wouldn’t say _____ troubled her.
| A．why was it that | B．that was why | C．it was what | D．what it was that |
We narrowly escaped _____in the forest of South America 15 years ago.
| A．killing | B．to be killed | C．to have been killed | D．being killed |
Mr. Smith spoke slowly and clearly to _____ all of us students could follow him.
| A．test | B．be sure | C．examine | D．make sure |
Nancy enjoyed herself so much ______ she visited her friends in Sydney last year.
| A．that | B．which | C．when | D．where |
—How about going for a picnic this weekend?
— Why not? _________.
| A．I’ve got that | B．It’s up to you. | C．Have a good time | D．That’s settled. |
I can’t remember the day ______ we first met in China.
| A．which | B．that | C．when | D．in which |