Is that your best friend Kitty?- No, it _________ be her. She flew to Singapore yesterday.

Does Ann like playing basketball?—-No, she doesn’t. She _____plays sports.

Do you like your maths teacher? —Sure, because he is the teacher ___ helps me a lot.

In the past few years there _________great changes in my hometown.

Will you please go to see the movie Just For Fun with me? —No, I won’t. I ___ it already.