$19$. It is interesting to collect tree leaves in different countries.

Sử dụng cấu trúc It is + adjective + to V

$20$. Do you think climbing mountains is challenging?

Cấu trúc của think: S + think + N/V-ing + is + adjective

→ (?) Do/Does + S + think + N/V-ing + is + adjective

$21$ Some people say that carving eggshells is boring and difficult.

Sử dụng cấu trúc say + that + clause (mênh đề)

$22$. We have never visited to Ho Chi Minh City before.

Sử dụng thì hiện tại hoàn thành PRESENT PERFECT vì có dấu hiệu là never: chưa bao giờ và before

# NO COPY

$Maniee$

It is interesting collecting tree leaves in different countries

Do you think climbing mountain challenging

Some people say that carving eggshells are boring and difficult

We had never visited HCM City before