9. It is very difficult for a teacher to _____ ...

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9. It is very difficult for a teacher to _____ ...
9. It is very difficult for a teacher to _____ the students' attention for more than an hour.
A. hold B. draw C. attract D. catch
10. When she felt she had our _____, she went red.
A. attentions B. attention C. announcement D. notices
please explain

C
attract
[E5trAkt]
vt.
吸引
vi.
有吸引力,引起注意
A
attention
[E5tenFEn]
n.
注意,关心,关注,注意力,(口令)立正!

9. It is very difficult for a teacher to _____ ... It is very difficult for _____ English. [ & It is very difficult for a person to know how fast a car is English is difficult _____.A.for me to learn B.to learn it C it,very,difficult,to,is,well,learn,english,him,for It is very difficult for pedestrians to know how fast a car This math problem is too difficult _____.A.for me to work it it is difficult for us to learn a lesson in life _____ we've ______ (introduce) a person to others is very difficult for _____ is very difficult to play the piano very well for the it is very difficult for me. It is very important for a teacher t teach things to teach t