Only after spending several nights working on the math problem to wonder whether the problem was wrongly set.
#83176
A
had he begun
B
he began
C
did he begin
D
began he
推荐题目
_______, Mary talks a lot about her favorite singers after class.
#83811
A
A quiet student as she may be
B
Quiet student as she may be
C
Be a quiet student as she may
D
Quiet as she may be a student
So hard ______ that we had to wait another day.
#80656
A
did it rain
B
it rained
C
has it rained
D
it has rained
—What do you think of Zhang Qiang?— does he study hard in school, does he keep the school rules.
#81230
A
Not only; but also
B
Neither; nor
C
Either; or
D
Hardly; when
No matter how frequently＿＿，the works of Beethoven still attract people all over the world.
#80752
A
performed
B
performing
C
to be performed
D
being performed
—Do you often go to the gym? You look fit．—On the contrary, seldom ____ in my spare time．
#82464
A
I work out
B
did I work out
C
I worked out
D
do I work out