______ entering the hall, he found everyone waiting for him.
Đáp án B
Kiến thức: Rút gọn hai mệnh đề cùng chủ ngữ, khi câu mang nghĩa chủ động
On + Ving = When S + V
Tạm dịch: Khi bước vào hội trường, anh ấy phát hiện ra rằng mọi người đang chờ anh ấy.
It is very difficult to________the exact meaning of an idiom in a foreign language
"How can you live in this messy room? Go and ______ it up at once."
The matter was so delicate that none of the ministers knew how to __________ it
According to the passage, Jackson’s policy toward American Indians was ___________.
Jenny is an early riser and she doesn’t object________the trip before 7 a.m