题目内容

Koster announced a plan that single-use______ ______ and ______ would be______ .

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Tourists travelling in Indonesia are facing a______ ______ on arrival.

I am interested in______ a______ ______ to Australia.

A man wanted to find out if people were______ for someone holding the door open for them.

The whale population has______ owing to______ whale activities.

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