_____ these experiments were successfully completed would we think of
going into humans.
| A．If only | B．So that | C．Only if | D．Even if |
-Have a picnic this weekend?
_____ I'd like to go out for a rest.
| A．I don't think so | B．I'm afraid not |
| C．I couldn't agree more | D．I believe not |
-How do you Like the book?
-It's quite different from______ I read last month.
| A．the one what | B．which | C．that | D．the one |
Most morning reading classes should be made use_______ English better.
| A．of learning | B．to learn | C．of to learn | D．to learning |
-Are you familiar with the music?
-Yes. There was a time _____ this kind of music was quite popular.
| A．that | B．when | C．with which | D．about which |
The teacher asked a very difficult question. It was Ted who finally _____ a good answer.
| A．came up with | B．had raised |
| C．went through with | D．put up with |