________ the 2020 Olympic Games will be held in Beijing is not known yet.
#95073
A
Whenever
B
If
C
Whether
D
That
推荐题目
The reason _____ he was driving his car so fast was _____ he would be late.
#92999
A
because, that
B
why, because
C
for which, that
D
that, that
 No one can be sure _____________ in a million years. 
#95081
A
what man will look like
B
what will man look like
C
man will look like what
D
what look will man like
I like getting up early in the morning. You know the morning air is so good      .
#92626
A
to be breathed
B
to breathe
C
breathing
D
being breathed