—Have you finished your book report?—Not yet. I couldn’t _______ on it with so loud music next door last night.
#72982
A
draw
B
devote
C
direct
D
concentrate
推荐题目
Be careful with the paper for it ____________.
#76006
A
is easily torn
B
is torn easy
C
tears easily
D
tears easy
 We must ________ our task, however hard it is.
#74856
A
carry about
B
carry off
C
carry on
D
carry away.