They/ be/ very happy/ see/ you again/.

A. They are very happy see you again.

B. They are very happy to see you again.

C. They were very happy seeing you again.

D. They were very happy when seeing you again.

Đáp án
B. They are very happy to see you again.

Câu hỏi thuộc Bài tập:

Bài tập Luyện thi vào lớp 10 - CHUYÊN ĐỀ 30: VIẾT LẠI CÂU VỚI CÁC TỪ CHO SẴN (Mã 130.2)