Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following question We should participate in Tree-Planting Campaigns _______ our city greener, fresher.

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Rút gọn mệnh đề

Mệnh đề được rút gọn bằng các hình thức sau:

(1) To V

Ex: I have some work. I must do it tonight.

→ I have some work to do tonight.

(2) V-ing

Ex: My mother felt tired. She went to bed early.

→ Feeling tired, my mother went to bed early.

(3) V-PII

Ex: My school was formed 50 years ago. It is holding a big anniversary.

→ Formed 50 years ago, my school is holding a big anniversary.

(4) Cụm giới từ

Ex: The man is in the house. He is my father.

→ The man in the house is my father.