—We’re supposed to recycle paper and bottles.It can help the environment.—________.It can save money,too.
It was such a funny show that people couldn’t help__________ again and again.A. laugh B. to laugh C. laughing
Bill has made great progress __________the help of his teachers.A. for B. with C. under
-Here is a schoolbag. Whose is it?-Oh, it’s __________. Thank you.A. my B. mine C. me
There is no living thing on __________moon.A. the B. a C. 不填
— You have never seen the dinosaur eggs, have you?—________. How I wish to visit the Dinosaur World.