1 - c
2- a 
3 - a
4 - c
​5 - b

1. since

2. for

from:@

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Dear . . ., 

Tet holiday is celebated on the first day of the Lunar New Year. Some weeks before the New Year, the Vietnamese clean their houses and paint the walls. New clothes are bought for the occasion. One or two days before the festival , people cook Banh Chung, which is the traditional cake, and other goodies.

On the New Year's Eve; the whole family gets together for a reunion dinner. Every member of family should be present during the dinner in which many different kinds of dishes are served. 

On the New Year morning, the young members receive, the family pay their respects to the elders. In the return they of lucky money wrapped in red tiny envelops. Then people visit their neighbours, friends and relatives.

4. We mustn't ride a bike in this street.

Đây là Online Math chứ không phải Online English

We use (xài) an adjective (tính từ) to describe (để tả) nouns (danh từ).

We use (xài) adverbs (trợ động từ) to talk more (để nói thêm) about (về) verbs (động từ).

We often (thường) form (tạo) an adverb (trợ động từ) by (bằng cách) adding (thêm) -ly to (vào) an adjective (tính từ). 

Nowadays, energy is being run out more and more so what should we do to save energy? First, we should use electricity more efficiently. We should turn the light, the television and other electrical appliances off when we are not using them. We can also use low energy light bulbs to save electricity. Second, we should use less private transport. We should travel by bus or train instead of car and motorbike. In addition, we can avoid using cars or motorbikes for short trips. Finally, we should reduce the use of water. Taking showers instead of baths is a good way. Besides, we should turn off the tap when brushing our teeth; this can save 6 liters of water per minute. In conclusion, those ways can save our lives in the future so we should raise our awareness of saving energy

1. use
2. making
3. will die
4. taking

use

making

will die

taking

1. future
2. present
3. will and won't
4. if...not
5. first/ Second