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There’s an e___________ amount of information on the Internet. That’s why many people like surfing the Internet.

The __________(功能) of the heart is to pump blood through the body.

I’m a new comer and not __________ (熟悉的) with the local customs.        

She was always very ___________ (慷慨的) in her charity.

A good command (運用能力；掌握) of English e__________ you to communicate with foreign businessmen freely.

A good command (運用能力；掌握) of English e__________ you to communicate with foreign businessmen freely.

Her tears __________ (流動) freely down her cheeks the moment she heard the sad news.