So difficult_____it to acquire a large vocabulary without the help of a teacher that he was close to giving up .
#84045
A
he have felt
B
have he felt
C
he did feel
D
did he feel
推荐题目
Not all the students follow the rules. Which of the following statement has the same meaning?
#80428
A
None of the students follow the rules.
B
All the students don’t follow the rules.
C
No students follow the rules
D
All of the above
-- Tom works hard at English.?-- _____, and _____. 
#83720
A
So does he; so you do
B
So you do; so is he
C
So he will; so do you
D
So he does; so do you
Only by working hard        succeed.
#82479
A
can you
B
you can
C
could you
D
you could
Only then _____ how much damage had been caused.
#81419
A
she realized
B
She had realized
C
had she realized
D
did she realize