The research mainly deals with the difficulty the students have ______ their attention pm their study all the time.
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A
to focus
B
to be focused
C
focusing
D
focused
推荐题目
 ―Are you disappointed with the result of the experiment?―No. ______, I’m pleased with it.
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A
On the contrary
B
As a result
C
What’s more
D
On the one hand
Living in the country,Peter doesn’t  write often,but we do hear from him________.
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A
now and then
B
sooner or later
C
at the same time
D
more or less
Last summer I took a course on ______ poisonous gases.
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A
what to deal with
B
how to deal with
C
what to be dealt with
D
how to be dealt with
The majority of the students here _________ English hard.
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A
practises speaking
B
practise speaking
C
practices to speak
D
practise to speak