.—_______ John this week?—Yes.—Where _______ him?—In the library.
#104288
A
Did you see; did you see
B
Have you seen; did you see
C
Do you see; have you seen
D
Have you seen; have you seen
推荐题目
 —Why does the lake smell terrible?—Because large quantities of water           .
#103559
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
—Allan looks tired out.  —Sure. He      in the gym for two hours. 
#102106
A
works out
B
had worked out
C
has been working out
D
was working out
He insisted that he _________ nothing wrong and ________free .
#103397
A
should do ; should be set
B
should do; had been set
C
had done; should be set
D
had done; had been set[
This is the first time that I ______ at the meeting.
#101848
A
had spoken
B
have spoken
C
has speaking
D
was speaking