The earth became so violent that it was not clear_________ the shape would last or not.
#32770
A
if
B
how
C
whether
D
why
推荐题目
---__________ will this goal be achieved? --- After 2011.
#33321
A
How long
B
How often
C
How soon
D
How far
The students of Senior 3 are now under great pressure for it will be just one year ______ they take the Entrance Examination.
#31576
A
since
B
after
C
before
D
when
---- I wonder how much you charge for your services． ---- The first two are free ____ the third costs $30．
#32193
A
while
B
until
C
when
D
before