Bài 1: Số hs của 1 trường khoảng 400 đến 500 hs. Khi xếp đều 17 hàng, 20 hàng đều dư 8 hs. Tính số hs của trường đó.

Bài 2: 1 STN a khi chia hết cho 4 thì dư 3, chia hết cho 5 thì dư 5, chia hết cho 6 thì dư bn?

Bài 3: Tìm x là số nguyên

a) 26/x+3

b) x+6/x+1

c) x-2/x+3

d) 2x+1/x-3

I. Cho dạng thích hợp của từ trong ngoặc .

1. He is always willing to help people. He is a ... person .(help)

2. Is your back still ... ? (pain)

3. They looked poor and ... (healthy)

4. She's having ... with her schoolwork this year. (difficult)

5. We are all ... about the final exam. (worry)

6. She always washer and irons her clothes ... (care)

7. The boys were ... to cross the street. (scare)

8. ... to teenagers can be difficult for parents. (talk)

II. Đọc đoạn văn rồi trả lời các câu hỏi .

How can we keep our teeth healthy? First, we should visit our dentist twice a year. He can examine our teeth and fill the small holes in our teeth before - once after breakfast and once before we go to bed. Thirdly, we should eat food that is good for our teeth and our body such as milk, cheese, fish, potatose, red rice, raw vegatables and fresh fruit. Chocolate, sweets, biscuits and cakes are harmful because they stick to our teeth and cause decay.

1. How often should we go to the dentist ?

2. What does a dentist do with our teeth ?

3. When should we brush our teeth ?

4. What foods are good for our teeth ?

5. Why are chocolate and sweets bad for our teeth ?

I. Sắp xếp các từ thành câu hoàn chỉnh .

1. the / on / right / railway station / the / is.

2. is / part / near / house / my / there / a.

3. tell / you / could / me / to / the / how / to / get / souvenir shop ?

4. it / is / how much / to / America / mail / to / letter / a ?

5. she / to / like / buy / would / postcards / some.

6. take / how long / it / to / Ha Noi / dose / get / to / plane / by ?

II. Cho dạng hoặc thì thích hợp của động từ trong ngoặc .

1. She never (stay) ... uo late at night .

2. My brother (work) ... in Ha Noi at present .

3. Why ... you (leave) ... the party early last night ?

4. Minh (go) ... to the dentist tomorrow morning .

5. Mozart (play) ... the piano when he (be) ... three years old .

6. Minh (brush) ... his teeth every night, but last night he (forget) ... to brush them .

7. I'm scared of (hear) ... the ghost stories .

8. Remember (brush) ... your teeth after meals .

I. Write the correct form of each verb in brackets.

1. If you (put) ... the glasses into very hot water, they (crack) ...

2. If Peter (be) ... late, we (wait) ... for him.

3. No one (help) ... you if you (not help) ... yourself.

4. If you (boil) ... water, it (disappear) ... into the atmosphere as vapor.

5. If it (rain) ... tonight, I (not go) ... for walk.

II. Use the suggestions to make conditional sentences type 1.

0. If ... earth / get warmer

-> If the earth gets warmer, the sea will get warmer.

1. Sea / get warmer

-> .................

2. Ice / North and South Poles / melt

-> .................

3. Sea level / rise

-> .................

4. There / floods / many parts / world

-> ...............

5. Many people / lose homes and lands

-> ...............

Chọn từ thích hợp để hoàn tất đoạn văn.

Most teenager (1) ... the world like television. Many listen to the radio. In a lot of countries, the most (2) ... shows on TV are series. They show ordinary characters and (3) ... they live. Many teenagers (4) ... pop music. There are (5) ... music programs on TV and one satellite TV station only shows pop videos. In many countries, people (6) ... watch satellite TV. Often in large cities, cable TV is (7) ... With satellite and cable TV, it's possible to choose from a wide variety of (8) ...

1. on all of around

2. popular interested important excited

3. when how where who

4. listen show join like

5. much any lots of lot of

6. can must should could

7. portable available regular normal

8. programs series viewers characters