--- When did you go out for the newspaper? --- 10 minutes ago. You          the flowers in the garden.
#102903
A
have watered
B
were watering
C
watered
D
had watered
推荐题目
---The window must have taken you quite a lot of time that day. --- You are right. They ________ for weeks.
#102507
A
haven’t been cleaned
B
hadn’t been cleaned
C
didn’t’ clean
D
haven’t cleaned
If city noises ___from increasing, people __ shout to be heard even at the dinner table 20 years from now.
#103976
A
are not kept; will have to
B
are not kept; have to
C
do not kept ; will have to
D
do not keep; have to
—Why does the lake smell terrible?—Because large quantities of water______.          
#101560
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted