IF YOU WANT TO GET GOOD MARKS, YOU MUST ………… HARD. A. STUDIED...

6. - DE KIEM TRA ANH VAN K9 BAI SO 2 HKI DOC
Tiếng Anh DE KIEM TRA ANH VAN K9 BAI SO 2 HKI DOC

6. If you want to get good marks, you must ………… hard.

A. studied B. study C. to study D. studying