________ the meeting himself gave him a great deal of encouragement.

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A．The president will attend

B．The president to attend

C．The president attended

D．The president's attending

－I think it's going to be a big problem.

－Yes, it could be.

－I wonder ________ we can do about it.

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What the doctors really doubt is ________ my mother will recover from the serious disease soon.

[　　]

________ she couldn't understand was ________ fewer and fewer showed their interest in her lessons.

[　　]

These wild flowers are so special I would do ________ I can to save them.

[　　]

It was ________ back home after the experiment.

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A．not until midnight did he go

B．until midnight that he didn't go

C．not until midnight that he went

D．until midnight when he didn't go

There was ________ time ________ I hated to go to school.

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I read about it in some book or another. Does it matter ________ it was?

[　　]

－Are you still thinking about yesterday's game?

－Oh, that's ________.

[　　]

A．what makes me feel excited

B．whatever I feel excited about

C．how I feel about it

D．when I feel excited

How long ________ you ________ touch with each other?

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