15b turn the sentences into he interrogative form and answer it 1 mary and linda were late. 2.emma and betty were good friends. 3 They were in the park yesterday.4His sister was seven years5.Is was hot yesterday.

1/So sánh 2 mũ 30 +3 mũ 30 +4 mũ 30 và 3 nhân 24 mũ 10

Câu 3:  Một hình lập phương có độ dài cạnh là 60 cm.
a) Hình có bao nhiêu mặt, mỗi mặt của nó là hình gì?
b) Tính thể tích của hình lập phương?
c) Tính diện tích xung quanh của hình lập phương ?

Tìm x, biết: 3/7 +1/7:x=3/14

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Khi bỏ dấu ngoặc biểu thức (x – y) – (a – b + c) ta được:
A. x – y – a – b + c        B. x – y + a + b – c

A. 6 mặt B. 8 mặt C. 10 mặt D. 12 mặt
Câu 8: Số đỉnh của lăng trụ đứng tam giác là:
A. 12 B. 8 C. 6 D. 4
Câu 9: Hình lăng trụ đứng tứ giác có bao nhiêu mặt bên?:
A. 6 B. 5 c4 d3

Vẽ góc xOy có số đo bằng 60 độ rồi vẽ tia phân giác của góc đó.

So sánh: 2 mũ 2022 với 3mũ1359

Exercise 2. Complete the sentences with the correct form of the verbs in brackets.
1. Last Monday, John (go) _________ to school late because there was a traffic jam near his house.
2. My family (clean) _________ the beach last Sunday.
3. Jack (collect) _________ coins when he was a little boy.
4. _________ you (provide) _________ evening classes for twenty children last summer?
5. Last year, Mark’s school (donate) _________ hundreds of books to children in a rural village.
6. Tom (not have) _________ time to finish his report yesterday.
7. I (see) _________ a real elephant when I went to the zoo last month.
8. We (clean) _________ up the dirty streets in our area last Saturday.
9. They (not start) _________ the community garden project in 2010.
10. My best friend and I talked to and (sing)for the elderly people at a nursing home.
Exercise 3. Circle the correct answers.
1. Jack didn’t see / didn’t watch Paula at school.
2. Did you be / Were you at the cinema last night?
3. Mimi brought / bought her new laptop to school.
4. The baby cried / cryed all night long.
5. My brother could swim / could swam when he was three.
6. Daisy repaired / prepared a nice dinner.
7. The children ate / eatted cheese sandwiches.
8. Did you sit / Did you sat next to Daniel?
9. There was / were a lot of people at the football match.
10. Some of my friends missed / mised the party.