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

Câu hỏi

Ba wondered when ________ with his family on a day trip to his home village.

A. to join

B. join

C. joining

D. will join

Đáp án
A. to join

Câu hỏi thuộc Bài tập:

E9- TĐ- Test for Unit 3 (1)