A. ex'pensive 

much => many

There are numerous tourist attractions in Ha Tinh

are

xem lại câu 1

opposite

between

near

in

next to

1. My hobby: playing football

2. Started: five years ago

3. I share my hobby with: my best friend

4. To do my hobby, I need: practice everyday and do more exercise

5. Benifits: Fun and makes you stronger

`S_1 = 5/(1.4) + 5/(4.7) +...+ 5/(97.100)`

`S_1 = 5 (1/(1.4) + 1/(4.7) +...+ 1/(97.100))`

`S_1 = 5/3 (3/(1.4) + 3/(4.7) +...+ 3/(97.100))`

`S_1 = 5/3 (1 - 1/4 + 1/4 - 1/7 + ...+ 1/97 - 1/100)`

`S_1 = 5/3 (1 - 1/100)`

`S_1 = 5/3 . 99/100`

`S_1 = 33/20`

Trong lòng mẹ - tác giả Nguyên Hồng

1. S: vegetarians - V: eat

2. S: ance - V: causes 

3. S: My brother - V: spends

4. S: My mother - V buy

5. S: we - V: cleaning up