No one knew what        because of the thick fog.
#39880
A
he had happened
B
had happened to him
C
had he happened
D
has happened to him
推荐题目
I began watching here an hour ago, but now nothing _______ yet.
#36538
A
happens
B
will happen
C
happened
D
has happened
Listen! The phone ___. Please go to answer it.
#42252
A
rings
B
is ringing
C
rang
D
will ring
I believe my dream  _________ true in the future .
#40260
A
comes
B
came
C
Will come
D
To come