Bài 1:điền giới từ vào chỗ trống
1.He always wants to come ................ to his country to visit his family
2.There are a lot of planes .................. the sky
3.Mr.Tam isn't ........... home now because he is ........... work
Bài 2:Cho dạng đúng của động từ trong ngoặc
1.My father isn't ..................... in the summer because he is a teacher (business)
