If you have any difficulty with this paper, you can _______ your notebooks.
#65247
A
focus on
B
carry on
C
refer to
D
go with
推荐题目
New ways have been found to prevent the river ______.
#70821
A
not to be polluted
B
against polluting
C
from polluting
D
from being polluted
In the cross-lake swimming race, a boat will be ____in case of an emergency.
#84048
A
standing by
B
turning on
C
getting on
D
running on