The students couldn't help ______ when they heard the joke.
A. to laugh B. laugh C. laughing
相关试题
---Is it in the box?
--- .
A. Yes, it is. B. No, they aren’t. C. Yes, it isn’t.
找出不同类的词。
( ) （1）A. hat B. friendly C. quiet
( ) （2）A. nose B. hair C. thin
( ) （3）A. his B. her C. I
( ) （4）A. student B. teacher C. glasses
( ) （5）A. right B. desk C. chair
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