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President Obama promised victims of the deadliest accident in 65 years ______ the government would help them．

Used to TV shows, _____ everything is quick and entertaining, many people do not have the patience to read a book that requires thinking．

In the US they focus on creative thinking skills, _____ in China they only focus on theory．

—Can you work out the problem?   —I can’t ______your explain how to do it.

Is it the pigeon to______ he attached the message ______ carried the news there?

The reason ______ Old French made contributions to Middle English is ______ English borrowed many words from it.

Chinese differs from western languages ______ it uses characters ______ stand for ideas, objects and deeds.

Polly’s mother was anxious about ______ she could get home safely in ______ foggy a day.

______ is amazing to us is ______some plants can sense the soft touches of the insects on the leaves.

______ wants to enter the company must show his ID at the entrance.