(2013·高考湖南卷)—I don’t understand why you didn’t go to the lecture yesterday afternoon.—I’m so sorry.But I________my homework.
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A
had done
B
was doing
C
would do
D
am doing
推荐题目
In the school hall, where a meeting       , some students are busy preparing for it.
#102043
A
is held
B
has been held
C
is being held
D
is to be held
Large quantities of oil      in a place near my hometown recently. 
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A
has discovered
B
have discovered
C
has been discovered
D
have been discovered
There is too much rain these days, isn’t there ?  —Yes, it ___ for a week.
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A
has been raining
B
had been raining
C
was raining
D
rained
Elizabeth believed the dog would die if _____ to her cruel owners so she kept it.
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A
returning
B
was returned
C
it would return
D
returned
Hey, John! I _____ that you were invited to this party too.
#99875
A
didn’t know
B
I don’t know
C
wasn’t knowing
D
isn’t working