He's learning English ________.

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I enjoyed the evenings ___________ we spent to together.

A.that　　 B.what　　  C.where　　 D.where

They went on doing their experiment_________ they had failed many times.

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E-mail，as well as telephones，_________ an important part in daily communication．

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It was _________ he said _________ disappointed me．

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When the fire broke out, the whole house was________ smoke and fire.

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________, he went abroad．

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Tony was very unhappy for __________ to the party．

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A．having not been invited

B．not having invited

C．having not invited

D．not having been invited

The _________ boy was last seen __________ near the East Lake．

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从A、B、C、D四个选项中，选出可以填入空白处的最佳选项.

He bought a ________table.

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