The students couldn’t help ________ when they heard the joke.A.to laugh B.laugh C.laughing
选出恰当的答句,将其标号填入相应的括号内。5%
Don’t leave your things this .A. is B. like C. of
Li Yan feel well today .A. don’t B. doesn’t C. isn’t
My teacher is forty . he looks young . A. Does B. But C. And
I have many things to on Sunday .A. doing B. do C. does