-I saw Mark on the playground just now.–No, it _______ be him. He is ill in bed at home.
If we don’t study hard, we will ______in our class.
Simon is creative enough to ______new ideas.
--- Is your uncle in his______? ---Yes. His forty-first birthday is coming next month.
It makes him feel good ______the cake with us.
He doesn’t like singing ______dancing.