Ex1

a) She is the girl who sits next to me in class

b) She has to go to school althoungh she is sick (ko chắc chắn)

Ex2:

1) I am hoa,I would like to tell you how to reduce the garbage in our house hold

2)Chưa nghĩ ra

3) Collect plastic bags and save paper to help us reduce well and save money.

Bt1

a/-she is the girl who sits next to me in class

b/-she has to go to school althoungh she is sick

Bt2

1.-I am hoa.i would like to tell you how to reduce the garbage in our house hold

2.-Most household produce very much garbage. these are the ways to reduce it:: collect plastic bags; separate solid waste and food waste; don't waste paper

3.-Collect plastic bags and save paper to help us reduce well and save money.

          có gì không hiểu thì nói nha :)