Learning English is very useful

1) Learning English is very useful
=> It's
2) There are many student in our class
=>
3) He often take part in outdoor activities
=> He often
4) They have moved there for 3 months
=> It's
5) It's not good to throw rubbish
=> You
6) He last met them is 2000
=> He
7) Let's go to the zoo
=> Why
Giúp em với ạ
Sáng mai em phải nộp cô rồi ạ
Ac nào giải đc em đánh giá 5 sao trang cá nhân ạ