If the weather had been better, we could have had a picnic. But it ____ all day.
#104057
A
rained
B
rains
C
has rained
D
is raining
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Mr Lin, a famous writer, _______ our school last week.
#100412
A
visits
B
will visit
C
is visiting
D
visited
The best way to prevent the air polluting _____ , but the sky is still not clear.
#102116
A
is used
B
are used
C
has been used
D
have been used
Unluckily, when I dropped in , Dr. Smith ____, so we only had time for a few words.
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A
was just leaving
B
has just left
C
had just left
D
just left
I noticed that my grandmother was very upset when I told her about the accident,so I wished I  it to her.
#103954
A
did not mention
B
have not mentioned
C
do not mention
D
had not mentioned