Listen! Is that Millie singing—No. It _____ be Millie. She has gone to Beijing.

I don’t like this TV program. It’s _____.

Where did you pick up the stamp?—It was at the post office ________ we worked in the summer vacation.

Bad habits are no way easy to be ______; it needs yourdetermination and perseverance

What’s wrong—I argued with my friend this morning.—___________