All the photographs in this book, ____ stated otherwise, date from the 1950s.
| A．once | B．until |
| C．unless | D．if |
He doesn’t think the question of ______they are boys or girls is important .
| A．if | B．whether | C．which | D．that |
Great changes have taken place in that school. It is no longer _____it was 20 years ago, ______it was so poorly equipped.
| A． What ;when | B．that; which | C． what; which | D．which; that |
A forest is usually found _______ heavy rainfall is frequent.
| A．there | B．which | C．where | D．because |
—When can I use your computer?
—Never! _______ should you touch it.
| A．At no time | B．In no time | C．At any time | D．At one time |
______ I believe in you, I don’t _______ your viewpoint_______ she is failing to find a well-paid job again.
| A．When ; submit ; which | B．As ; subscribe for ; where |
| C．If ; apply for ; / | D．While ; subscribe to ; that |