I

1. The children are fond of watching dragon dance in the street at Tet.

⇒ like = tobe fond of + N/Ving

2.  I promise I will finish the exercise on time.

II

1. at ⇒ on ( on time: đúng giờ )

2. have ⇒ has ( my friend là số ít )

3. healthy ⇒ healthily ( stay + adv )

sửa đề shoulders ⇒ should

1》The children like to watch dragon dance in the street at Tet (Fond)

=> the children...fond of............in the street 

2》you can trust me to finish the exercise on time

=> I promise....to finish the exercise ơn time...

3》sửa lỗi sai 

1 . Please arrive early so that we can start the meeting at time => on

2.my friend, As well As her friend, have know the answers to the question  => has

3.to keep US away from COVID 19, we shoulders stay healthy and doing exercise regualarly => healthily

Xin hay nhất nha