He rewarded the boy ________ $10 ________ bringing back the lost dog.

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He was good enough to take great ________ the big box.

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A．trouble to carry

B．trouble of carrying

C．troubles to carry

D．trouble to be carrying

Alice returned from the manager's office, ________ me that the boss wanted to see me at once.

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Mr White ________ at 8:30 for the meeting, but he didn't show up.

[　　]

A．should have arrived

B．should arrive

C．should have had arrived

D．should be arriving

The child ________ the candles ________ before he cut the cake into pieces.

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I work in a business ________ almost everyone is waiting for the great chance.

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I used to dig the garden every week, but I ________ when the rain washed all the plants away.

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I'm quite willing for your brother ________ us.

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I would not go to London ________ the mere purpose of buying a new hat.

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He made another wonderful discovery, ________ of great importance to science.

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