My father _________someone to come and help us when you _______ us yesterday.
—______ students are there in your class?—Forty-one.A. How much B. How many C. How long
—______ 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