( 72 x 135 + 9 x 28 x 15 ) : 25-3500 : 25

= [ 72 x 135 + ( 9 x 15 ) x 28 ] : 25 - 3500 : 25

= ( 72 x 135 + 135 x 28 ) : 25 - 3500 : 25

= [ 135 x ( 72 + 28 ) ] : 25 - 3500 : 25

= ( 135 x 100 ) : 25 - 3500 : 25

= 13500 : 25 - 3500 : 25

= ( 13500 - 3500 ) : 25

= 10000 : 25

= 400

B

1. How many seasons are there in Vietnam?

2. Minh isn't going to Ha Noi next week

3. How far is it from your house to school?

4. Do you like learning english?

IV.

1. watches

2. walk

3. Are - doing

4. Does - have

II. 

1. D. in

2. A. Are

3. A. What

4. B. Are

5. C D ??

III

1. She is from England

2. In summer, it is hot

3. In summer she often go swimming 

4. In spring, Linda and her father often go camping in the national park

I cannot recognise who he is before he gets in the room.

-> Only after he gets in the room can I recognise who he is

Lỗi bạn ơi

Tôi không thức khuya nhưng mà tôi thức xuyên đêm=))

27 này thi không học chắc bố mẹ tôi cho tôi ra chuồng chó nằm:D