WE MUST ………OUR HOMEWORK BEFORE GOING TO CLASS.A. TO DO B. DO C. DOI...

4. - Tải file đính kèm:anh_6a-yen_2710201721
Tiếng Anh Tải file đính kèm:anh_6a-yen_2710201721

4. We must ………our homework before going to class.

A. to do

B. do

C. doing

D. did