________ not polite to make fun of people who are in trouble.

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It is ________ to work out the maths problem. You needn't ask her for the answer.

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－How about going hiking this weekend?

－Sorry. I'd rather ________ at home.

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The food made here is more delicious than ________ made there.

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You will be successful if you ________ hard.

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There are so many kinds of radios here, I really can't decide ________ to buy.

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Here are some things ________ they've learned from scientific studies.

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People like to spend more time ________ their meals in this restaurant.

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During Christmas, people get together and sing Christmas songs for ________.

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The little girl was too scared ________ a word.

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