Does the MP4 0n the desk belong to_______?－ No, it is _______.

Kitty, have you seen the film Tai Embarrassed (《泰囧》) yet? — Yes. I ________ it last month.

Listen ! Helen is singing in the next room.—It __________ be Helen. She is in Tianjin now.

I ________ speak English in class because I’m afraid of making mistakes. —Don’t be shy. Believe in yourself and everything will be OK.

As we all know, apples are sold by ____ weight, and socks are sold by _______dozen.