All life on our planet ________ , in one way or another, upon the sun.

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-- I'd like to invite you to a concert this evening.

-- Thank you, but I'm not sure at the moment ________ I'll be free.

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All the things ________ , your plan is practical.

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He used to ________ his teaching when he was young.

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______ snakes and drinks, but they also brought cards for amusement when they had a picnic in the forest.

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The Olympic Games, ______ in 776 B.C. , did not include women players until 1912.

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Fishing is his favorite hobby, and_____.

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A．he'd like to collect coins as well

B．he feels like collecting coins, too

C．to collect coins is also his hobby

D．collecting coins also gives his great pleasure

_____ the meeting himself gave them a great deal of encouragement.

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Victor apologized for _____ to inform me of the change in the plan.

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_____ body language in a correct way will help communicate ______ others.

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