----Look at the boy running on the playground. Is it David?---- It ______ be him. I saw him go to the teachers’ office just now.
Students should study hard to make their dreams .
---Why don’t you want to go to the beach? ---Because there is ________ there.
I ____________sitcoms, because they’re boring.
---What a tall tree! I can’t reach the apples. ---I think Gao Yan can. She is the ________ girl in our class.
---Who’s at English than Tara? ---Tina is. She works much ______.