The story is _________ and all of us are _______ in it.
—______ do you write to your pen friend?—Once a week.A. How long B. How soon C. How often
As students, we should ________ our study.A.pay forB.spend onC.concentrate on
Many students will be ________ if the class is boring.A.sleep B.sleepy C.sleeping
Students should pay attention to ________ the teacher in class.A.listening toB.listen toC.hearing of
When I have problems I often ask my teacher ___ .A. to helpingB. helpC. for help