Bài 9: Điền động từ khuyết thiếu "mustn't" hoặc "don't have to"vào chỗ trống thích hợp.
1 There is a "No turn right" sign. You…………… turn right.
2 The sign says "No smoking". You ……………smoke here.
3 You……………have an appointment for this doctor. You can go and see him when you want.
4 You ……………tell me. I already know.
5 The big boss will be at the meeting. You……………be late.
6 You can help me if you want to but you…………… .
7 You…………… park your car there. That's the Director's place.
8 This area is off limits to everybody. You……………come here unless you are invited.
9 You…………… to wear a tie in this company but they prefer it if you do.
10.You…………… criticize David. He's doing the best he can.
11.You ……………drive there.You can take the train.
12 You …………… play tennsis to enjoy watching tennis matches.
13 You…………… buy me presents though I always appreciate it when you do.
14 It's really important to remember. You……………forget.
15.You……………tell anybody. It is a big secret.
16 We are already late. We……………waste any more time.
17 This is a sterile area. It must be kept clean. You……………bring any food or drink in here.
18 You……………come at 8.00. Come at whatever time suits you.
19 You……………smoke in this area. It is forbidden.
20 I……………go back again. The treatment is finished.
21 Jeans are not allowed in this company. You……………wear jeans.
22.You……………be mad to work here but it helps!
23 You……………buy the text book for this course, you can borrow mine.
24 You……………smoke in a gas station.
25 This bus is free! You……………buy a ticket.
26 You……………enter the park if your dog is not on a leash
mọi người giúp mik tick 5 sao
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Sinh Học lớp 12
