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People say that young Chinese students’ eyesight keeps dropping _________ because of both too much homework and poor learning conditions.

When it comes to my hobbies, I like rock climbing______ .

With the word“PM2．5"_____ appearing in media reports，people pay greater attention to it and seek health tips for smoggy days．

The newly­learnt words will be impressed on us only if they are ________used in everyday communication.

The special dance，Gangnam Style，is ________ popular all over the world and was even performed in the White House.

She felt ________ awkward because of her bad performance on the stage.

The waiting lists for a bed in a public elderly care home in Beijing have grown ________ long that some are saying it could take 100 years to get a position.

The weather was ______ cold that I didn’t like to leave my room.

With the word “ PM2.5” _________ appearing in media reports, people pay greater attention to it and seek health tips for smoggy days.

. Tommy’s parents thought he was at school, but _______ he was in an Internet bar.