________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
_________ an ad does not lie, it does not mean it tells you the complete truth.
#34324
A
Even if
B
As though
C
Only if
D
as if
The Premier says that bilateral relations will grow smoothly and steadily _____ both countries follow the principle contained in the joint documents.
#31524
A
as far as
B
though
C
unless
D
as long as
The problem with being a time waster is _____the online game playing often spills over into the periods of time that should be productive.
#34759
A
what
B
which
C
that
D
whether