He _________his friend in the crowd at the first sight and called out his name.

According to the government, the new tax law will not ________until next month.

Gaddafi’s failure in Sirte _________ him the last opportunity to reestablish the government.

Some insects _______ the colour of their surroundings to protect themselves.

She rose with the face red, _______ at the rude waiter.

The food is not much. How long do you think it will _______?

---I beg your pardon?
---Your mind must be ________ when I was speaking, wasn’t it?

I _____him not to smoke , but he didn’t think it necessary .

The school should ________ immediately to the students’ request that they should have more time to relax.

—This morning your mobile phone was always busy. I couldn’t ________ to you until several attempts.
—Oh, I’m sorry. I was discussing the price of our products with a client over the phone.