题目内容

Beforetheflighttakesoff,allpassengers(ask)_________tofastentheirseabelts.

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The price of gas has greatly (increase) __________ in recent years.

Our company's most (value) ___________ resources are its employees

The salesgirl has made a detailed introduction to the (function) __________ of online services.

These programs are (design) _________ to provide best services for the poor people.

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