— Has Jack finished his homework yet? — I have no idea；he ＿＿it this morning.
#104425
A
was doing
B
had been doing
C
has done
D
did
推荐题目
The fire was finally brought under control, but extensive damage _________.
#99352
A
is caused
B
was causing
C
had caused
D
had been caused
The reporters exposed the corruption (腐败) of several high officials in the government; as a result, they ________ to resign from office.
#104826
A
asked
B
were asked
C
had been asked
D
have asked
Jim ______ a late night film at home when, right in the middle a thrilling scene, the television went blank.
#100588
A
watched
B
had watched
C
was watching
D
would be watching
---When ______ again? ---When he ______, I’ll let you know.
#103420
A
he comes; comes
B
will he come; will come
C
he comes; will come
D
will he come; comes
—What is the price of gas these days? —Oh, it ____________ sharply since last month.
#102165
A
is rising
B
has risen
C
is arising
D
has arisen