Tìm dạng đúng của động từ cho sẵn để điền vào chỗ trống.
1.-What............... your father ...................?
-He is an electrical engineer.
2.,-Look out of the window. it .................. ?
3. Alice ( not)......................the bus to school every day. She...................
4. This box .................. a lot. It's too heavy for me to lift.
5. Look! The little boy ..................... towards the door.