I found _____ necessary to save energy and protect the environment.
A. that B. this C. it D. one
________ beautiful these postcards are! Where did you get them?
A. What a B. How a C. How D. What
We can’t do well in examinations we study hard in school time.
A. if B. and C. since D. unless
Her son Coke, but now he milk.
A. used to drink, is used to drinking
B. used to drinking, drinks
C. is used to drinking, used to drink
D. is used to drink, is drinking
Our country a lot in the last few years.
A. changes B. changed
C. will change D. has changed
I bought two pens. One is black, is red.
A. other B. others C. another D. the other
