-- Someone is knocking at the door. Is it Amy?--It ________ be her. She is giving a performance at the theater now.
The artist is full of _________, so his painting is hard to understand.
---What a beautiful photo! ---Thanks. It_______ in a small village in Bama.
---Where is Peter? --- He ___________ dinner for his parents at home.
________you don’t give up, your dreams will one day come true.
Look at the heavy rain! Nobody knows when the plane will _____ and when it will land.