Listening attentively in class and reviewing in time _______ a sure way to improve your learning, and this is especially true _______ it comes to standard tests.
#85963
A
is, when
B
are, when
C
is, while
D
are, as
推荐题目
Tony has much difficulty ______Chinese , so he often asks me for help . 
#43861
A
understand
B
understands
C
understanding
D
to understand
_______ of the teachers in our school is 118 and _________ of them are women teachers.
#43865
A
The number, first fourth
B
The number, one fourth
C
A number, first fourth
D
A number, one fourth