I arrived at work. The assistant knocked at the door. A. No sooner had I arrived at work than the assistant knocked at the door. B. I hardly knew the assistant knocked at the door as I just a

50/50

I arrived at work. The assistant knocked at the door.

No sooner had I arrived at work than the assistant knocked at the door.

I hardly knew the assistant knocked at the door as I just arrived at work.

I was arriving at work as the assistant knocked at the door.

Hardly had I arrived at work then the assistant knocked at the door.

Giải thích

Tôi đến chỗ làm. Trợ lý gõ cửa phòng.

A. Ngay khi tôi đến chỗ làm thì trợ lý đã gõ cửa phòng.

B. Sai ngữ pháp

C. Tôi đang tới nơi làm việc thì trợ kỹ gõ cửa phòng.

D. Sai ngữ pháp

→ Chọn đáp án A