So difficult _______it to work out the problem that I decided to ask Tom for some advice.
#84494
A
I did find
B
did I find
C
I’ve found
D
have I found
推荐题目
The headmaster will not permit the change in the course, nor         it a thought.
#82367
A
does he even given
B
he even gives
C
will he even give
D
he will even given
________, he can succeed in his work if he works hard.
#83782
A
As a person is foolish
B
Foolish as a person is
C
As is a person foolish
D
As foolish a person is
_________ did the students realize that they were mistaken about spiders. 
#83106
A
It was until then
B
It was not until then
C
Not until then
D
Not until when