Câu hỏi:

08/07/2024 17 K

The scientists __________on this project try to find the solutions to air pollution.

A. working

Đáp án chính xác

B. worked

C. are working

D. who working

Trả lời:

verified Giải bởi Vietjack

A

Kiến thức: rút gọn mệnh đề quan hệ

Giải thích:

Rút gọn mệnh đề quan hệ bằng cách bỏ đại từ quan hệ, động từ tobe (nếu có), và chuyển động từ về dạng:

- V.ing nếu ở thể chủ động

- V.ed nếu ở thể bị động

Tạm dịch: Các nhà khoa học làm việc trong dự án này cố gắng tìm ra giải pháp cho ô nhiễm không khí.

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