Some scientists think that it may take ______ years to make robots look like people, and do the same things as us.
—______ 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 for B.spend on C.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 to B.listen to C.hearing of