Số nguyên tố là số tự nhiên chỉ có các ước số là 1 và chính nó. Các số có nhiều hơn 2 ước số được gọi là hợp số.

My teacher always drives very carefully .

=> How carefully .......in driving my teacher always does ! ...............?

Would you please lend me a compass ?

=> May I less foryou a compass

Điền giới từ.

1, look ....at..... the house

2, there is a big yard.....in......front..of......the house

3, there are many trees..behind......the house

4, there is a well....to.............the left of the house

5, to the right....of....the house, there is a flower garden

6, I live..in.......a house

7, there are many people......on......the street

8, they live.....in .a restaurant

9, their house is next .....to..........a bookstore

10, his father works....in....a factory