---Does your brother serve in the army?
---No, not now. But he ________ in the army for 8 years.

I don’t understand how you got a ticket. I always ______ you ______ a careful driver.

What ______just now?　

I hadn’t seen him for years but I _____ him at first sight.

Although she is pretending hard to be young, grey hair and the lines on her face _______.

It’s natural that a man can hardly ______ a smile when he hears some good news.

–Is that hotel big enough? We have at least 200 guests.
--Sure. That’s a hotel which can ______ 300 people.

---Tonight’s Stars in Danger《星跳水立方》 ______ to be an exciting one.
---I can’t agree more. Many famous stars will be involved and will fight for their own spotlight.

North Korea threatens to ________ from six-party talks aimed at ending North Korea's nuclear program unless its proper rights are to be satisfied．

Doctors are doing research to find out what happens physically when people _________ smoking.