We should participate in Tree–Planting Campaigns ________ our city greener

2/50

We should participate in Tree–Planting Campaigns ________ our city greener, fresher

organizing to make

organized making

organized to make

which organize to make

Giải thích

Đáp án C

Organize to do sth: tổ chức, sắp xếp làm việc gì đó

Câu ở dạng đầy đủ phải là: “We should participate in in Tree-Planting Campaigns which/that are orgarnized to make our city greener, fresher

à rút gọn mệnh đề quan hệ thành “…Tree-Planting Campaigns organized to make…”