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7. - Đề kiểm tra 15 phút Tiếng Anh 10 – Unit 4: For a better community
Lớp 10 Tiếng Anh Đề kiểm tra 15 phút Tiếng Anh 10 – Unit 4: For a better community

7. During the volunteer programme, they ________ up international understanding while

they ________ for the needs of the local community.

A. builds - are working

B. were building - were working

C. were building - worked

D. built - were working