He was reading out the data while Sara wrote it down carefully.

He was reading out the data while Sara wrote it down carefully.

Đề bài: He was reading out the data while Sara wrote it down carefully. 

A. was reading

B. while

C. wrote

D. carefully

Lời giải:

Đáp án: C

Giải thích: Hai hành động đang cùng xảy ra song song trong quá khứ thì đều chia quá khứ tiếp diễn. => was writing

Dịch: Anh ấy đang đọc to dữ liệu trong khi Sara cẩn thận ghi lại.