We work together to achieve our common purpose: ________ world that is safer, cleaner and healthier than ________ one we are living in.
— Mum, where’s my hat? — It in you bedroom. I saw it here yesterday. A. maybe B. may be C. may
— Would you like some coffee? — . A. My pleasure B. Help yourself C. Yes, please
— Why is Mr. Hu popular among the students?. — Because his classes are lively and interesting. A. sometimes B. always C. never
Tony said he had to tell me. A. anything important B. important something C. something important
The woman looks very old. I think she’s 80 years old. A.on least B. for least C. at least