这5个题的答案是AADBB。帮忙给下简单的答案解析,为什么选这个,为什么排除其他答案。
1. Don’t talk about such things of __________you are not sure.
A. which
B. what
C. as
D. those
2. Is this the factory __________ you visited the other day?
A. that
B. where
C. in which
D. the one
3. Is this factory __________ some foreign friends visited last Friday?
A. that
B. where
C. which
D. the one
4. Is this the factory __________ he worked ten years ago?
A. that
B. where
C. which
D. the one
7. This book will show you __________ can beused in other contexts..
A. how you have observed
B. what you have observed
C. that you have observed
D. how that you have observed