They provide us with food.
A. give B.show C.find
If you want to play the guitar well, you must do a lot of practice.
A.time B.exercise C.homework
Alice usually does her homework at 5:30 in the afternoon.
A.never B.most often C.sometimes
When the bell rings, we all go to the classroom to have class.
A.stops working
B.makes a sound
C.cries for help
I would like to be your penfriend.
A.want B.like C.hate
Many factories poured out dirty water and polluted the Pearl River.
A. made ... clean
B. made ... full
C. made ... dirty
