Bài tập 1: Hoàn thành những câu hỏi sau với "must not" và "need not".
1. You.........ring the bell; I have a key.
2. We...........drive fast; we have a plenty of time.
3. We...............drive fast; there is a speed limit here.
4. Candidates.............bring books into the examination room.
5. You.....................write to him for he will be here tomorrow.
6. We................make any noise or we'll wake the baby.
7. You............do all the exercises. Ten sentences will be enough.
8. I want this letter typed but you.............do it today. Tomorrow will do.
9. You...........take anything out of the shop without paying for it.
10. You.............carry that parcel home yourself; the shop will send it.
Loga
Sinh Học lớp 12
