China is becoming stronger and stronger. It is no long __________.
A. what it used to be
B. What it was used to being
C. what it used to being
D. what it was used to be
查看答案
Go and get your coat. It’s__________ you left it.
A. there
B. there where
C. where
D. place
The energy is __________makes the cells able to do their work.
A. what
B. that
C. which
D. such
The trouble is __________ we are short of tools.
A. what
B. that
C. how
D. why that
America was __________was first called “India” by Columbus.
A. the place
B. what
C. that
D. where
微信支付 
支付宝支付