(2013·宁夏银川一中高三第四次考试)________ scores of times, but he still couldn't understand it.
#30539
A
Having explained
B
Having been explained
C
Though it was explained
D
It was explained
推荐题目
It's really very dangerous.One more step，________ the baby will fall into the well.
#30469
A
or
B
so
C
but
D
and
－Did Tom go back late last night?—No. It was just nine o’clock he arrived home.
#32970
A
when
B
after
C
until
D
that
Our class discussed the question of __________it is necessary for us students to use mobile phones on campus.
#31888
A
if
B
where
C
whether
D
that
---Why is he unhappy? ---He has a case_______he is being accused of stealing.
#30929
A
when
B
where
C
there
D
which
The new policy allows a couple to have a second birth _____either is an only child.
#30142
A
though
B
if
C
unless
D
until