Only by _______ your attention _______ what you are learning can you learn it well.
#73386
A
concentrate; on
B
pay; on
C
concentrating; on
D
paying; on
推荐题目
______in a proper way, waste can be turned into useful things.
#74265
A
To deal with
B
Dealt with
C
Dealing with
D
Being dealt with
The dog, if trained ____, will be made a good watch-dog one day．
#73715
A
properly
B
hopefully
C
personally
D
usually
With the college entrance examination near, both the parents and the students are more and more anxious.
#71211
A
draws
B
drawn
C
drawing
D
is drawing
I am always delighted when I receive an email from you.________ the party on July 1st, I shall be pleased to attend.
#64099
A
On account of
B
In response to
C
In view of
D
With regard to