Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.

Câu hỏi

They told their parents that they___________ their best to do the test.

A. try

B. will try

C. are trying

D. would try

Đáp án
D. would try

Câu hỏi thuộc Bài tập:

Ms. Dung Purple - Unit 9: Protecting the Environment - Grammar