________we went to visit Professor Smith, he________his research work.
#31550
A
The first time; devoted to
B
Whenever; was concentrate on
C
For the first time; was busy with
D
Each time; was absorbed in
推荐题目
_____ he thought he was helping us with the work , he was actually in the way.
#34578
A
Because
B
If
C
Although
D
When
________you like the portable personal computer so much，why not buy one?
#30044
A
So that
B
Now that
C
Even if
D
In case
advertisements are of great help, I don’t think we should entirely rely on them.
#32366
A
Since
B
While
C
Because
D
As
_______ your opinions are worth considering, the committee finds it unwise to place too much importance on them.
#33397
A
As
B
Since
C
Once
D
While
Don’t start reading a book _____ you find that it’s one you can read with ease and understanding.
#32304
A
when
B
if
C
unless
D
Though