Must I go to a medical school and be a doctor like you ,Dad?No,you _______ .You’re free to make your own decision .
The No. 15 bus stops here, ______?
---Why do you come back so late? ---Because there were too many people in the supermarket, and I had to _____to pay for the things.
This is ___ __ boy. That girl is _______.
We’ll go for a walk if it ___ __ tomorrow.
My best friend visited my house while I __ __ dinner in the kitchen.