We can’t            against other countries in trade if we don’t develop our national economy(经济).

German Chancellor Angela Merkel says united Europe could fail if Eurozone(欧元区) ______ over debt problems in Greece, Italy and other weaker economies.

Encourage your children to try new things, but try not to ______ them too hard.

On hearing the news of the accident in the mine, she _____ pale.

Berners-Lee ________ the idea of the World Wide Web in 1989 while working in Switzerland.

According to scientists, our mental abilities begin to         from the age of 27 after reaching the highest level at 22.

Walking alone in the dark, the boy whistled to       his courage.

---Jack can't concentrate on his study recently． --- Yes, that might ____ why he did so badly in the last test．

When designing your house, you'd better ____ land for a garden．

--- How was your family's party? --- We didn't plan like that, but it ____ very well．

Developing science and technology must ____ people rather than harm them．

Look at the pride on Tom’s face. He _____to have been praised by the manager just now.

Could you tell me how you usually _____ Thanksgiving Day in your country?

After long and hard struggle, his small family business began to _____.  Hopefully, it will change into a large firm in the near future.

To my mind, the secret to happiness _____ your successful work and your contribution towards others' happiness. 

Some research has indicated that unemployed workers should ______ any job they can get, including temporary work, as a bridge to higher-paying employment.

As its name __________, the Volunteer Farm relies on volunteers to weed, plant and harvest.

Chengdu is famous for various kinds of snacks. Prepared in different ways ,they____ different tastes, good quality and low prices.

Your meaning didn’t really ______, John. I didn’t ______.

—I wonder why he has been acting so strangely these days.—Recent pressure at work may     his behavior.