—Why does the lake smell terrible?—Because large quantities of water_______________.
#99629
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
推荐题目
－Do you know our hometown at all?－No, this is the first time I _______ here.
#101287
A
was
B
am coming
C
came
D
have come
(2013·辽宁，22)He was unhappy when he sold his guitar.After all，he________it for a very long time.
#99731
A
has had
B
had had
C
has
D
had
Dad had to cycle to work this morning because his car _______ at the garage.
#102788
A
was repaired
B
was repairing
C
was being repaired
D
would repair
----What do you think of the Chinese language today? ---- Quite popular. It __________ an important role in communicating with other countries. More and more foreign friends are learning Chinese.
#99895
A
plays
B
played
C
has played
D
will play
. 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