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
While he_____ on the phone, a man walked into his room.
#39822
A
was talking
B
talked
C
is talking
D
talk
Sally took a photo of her friends while they _________ computer games.
#39111
A
play
B
are playing
C
have played
D
were playing
Tom wants to be a singer and he_____ singing lessons to do it.
#39114
A
took
B
has taken
C
is taking
D
was taking.
--- ____________ you seen the 3-D film Titanic yet? --- Yes. I __________it a few days ago.
#41754
A
Did , saw
B
Have, saw
C
Do, have seen
D
Have, have seen