---The window is dirty.
---I know. It ______ for ages and I’m considering giving the task to our children.

Jack _______ the test for further study in the college. Let’s have a party to congratulate him.

I ______ the TV series The Legend of Zhenhuan when my mom made a phone call to me.

I________ an important conference at 10 o’clock this Sunday morning.

A high-tech exhibition ________in the National Museum now. Let’s go and visit it.

I hope you enjoyed the film last night.
How on earth do you know I went to a film? I ________ you.

My wife ______the night shift when my plane ______. That’s why no one is to meet me at the airport today.

—You may find the key to the math problem on page 107．
—Ah, it's so simple. I wonder why I _____ of that．

The villagers _______ closing down the factory, but till now the local government hasn’t _______to it.

The policeman came up to the house, whose door was open, _____ there for a while, and went in.