—Did Alan enjoy seeing his old friends yesterday? —Yes, he did. He ________ his old friends for a long time. 
#104739
A
didn’t see
B
wouldn’t see
C
hasn’t seen
D
hadn’t seen
推荐题目
The new generation of computers, with artificial intelligence, _______and perfected now.
#101304
A
are being developed
B
have developed
C
developed
D
will develop
The teacher told us that the sun ___ in the east and ___ in the west. 
#101855
A
raised; set
B
rose; set
C
rise; set
D
rises; sets
. They gave us so warm a welcome that we were moved very much. It was a sight__________ we__________.
#103750
A
what;have never forgotten
B
which; wre never forgotten
C
as ;will never forget
D
that; would never forget