ann...come to the party tonight because the teacher is ill
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The cars will be built in the new factory by robots
Desktop computers won't probably be needed ten years from now
Celluloid film cameras have been replaced by digital cameras
Passengers can be helped with the check-in at the airports by robots now
Your vocabulary may be enriched by using this electronic dictionary
Computers that can think like humans haven't been invented

+) Bị động ở quá khứ đơn:
CĐ: S + Ved/II + O
BĐ: S(O) + was/were + Ved/III + O(S)
+) Bị động ở HTHT:
CĐ: S + have/has + Ved/III + O
BĐ: S(O) + have/has + been + Ved/III + O(S)
Thì quá khứ đơn :
Chủ ngữ + dạng của động từ “to be” + Động từ ở dạng phân từ 2)
Hiện tại hoàn toàn :
Khẳng định: S + have / has + been + \(V_3\)/-ed + (by + O)
Phủ định: S + haven’t / hasn’t + been + \(v_3\)/-ed + (by + O)
Động từ khuyết thiếu :

I. Grammar
1. Hoàn thành các câu sau sử dụng động từ khuyết thiếu “Must”, “Have to” và điền vào trong ngoặc
1.1. I Have to… wear a black dress because I want to look good.
1.2. I…Must… wear a black dress because that is the requirement of my company.
1.3. I…Have to… go home now because it's too late.
1.4. I…Must… …go home now because I have a lot to do.
1.5. I… Have to… go to see my friend because I miss her.
1.6. I…Must… go to see my classmate because we work on the same project.
1.7. You…must… wear a tie in the company. It's one of their rules.
1.8. I………Must………go abroad next week. My boss wants me to sign a contract with our foreign customers.

Bài 4: Điền động từ khuyết thiếu “must” hoặc ‘mustn’t” vào chỗ trống để hoàn thành các câu sau.
I must do the laundry every2 days.
You must stay out too late.
You mustn't break the class’s rule.
My mother doesn’t want me to arrive home late, so I must leave now.
Those boys must finish their homework before going out.
Jim must finish his essay today because he’s very busy tomorrow.
Passengers mustn't use phones on the plane.
You mustn't be late for school tomorrow.
Children must be accompanied by an adult when visiting this dangerous place.
I must be home before dinner.
Students mustn't talk during the exam.
You mustn't cheat in a test.
There must be someone upstairs. I can hear the noise.
We mustn't give up on what we are doing.
You mustn't let strangers enter the house while I’m not in.
Bài 4: Điền động từ khuyết thiếu “must” hoặc ‘mustn’t” vào chỗ trống để hoàn thành các câu sau.
I ___must_______do the laundry every2 days
You ___must_______ stay out too late.
You ____mustn't_______ break the class’s rule
My mother doesn’t want me to arrive home late, so I __must________ leave now.
Those boys ___must________ finish their homework before going out.
Jim ___must________ finish his essay today because he’s very busy tomorrow.
Passengers__mustn't_________ use phones on the plane.
You _mustn't_________ be late for school tomorrow.
Children ___must____________ be accompanied by an adult when visiting this dangerous place.
I ____must________ be home before dinner.
Students___mustn't______ talk during the exam.
You _______mustn't_____ cheat in a test.
There ___must__________ be someone upstairs. I can hear the noise.
We ___mustn't__________ give up on what we are doing.
You ___mustn't_______ let strangers enter the house while I’m not in.

What did Mary take?
Who can you meet?
Who took Mary to school?
What do you want?
Who will you meet?

1, Let's go to school
2, Let's play together
3, Let's go to the zoo

Đáp án B
Để thích nghi với đời sống “gặm nhấm”, thỏ có những thích nghi thể hiện ở các răng cửa cong sắc và thường xuyên mọc dài, răng hàm kiểu nghiền còn răng nanh khuyết thiếu
is not going to come