Hesparednoeffortstomakehimself

He spared no efforts to make himself _______ but failed.

A．understand

B．understanding

C．understood

D．to understand

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相关试题

33. If I_________you would drop in, I would have stayed home waiting for you.

A．have known

B．knew

C．would know

D．had known

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32. ––When will you be back, Peter?
––________a couple of days.

A．On

B．In

C．For

D．By

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31. All books ______ to the library more than three days late will be subject to a fine.

A．return

B．returning

C．to return

D．Returned

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30. When he was only thirty years old, he had already experienced______most people only experience when they are much older.

A．what

B．which

C．who

D．When

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29. ______ in the sports world, a sportsman needs to train constantly to keep himself in best condition.

A．Survive

B．Surviving

C．To survive

D．Survived

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