youdon’tloseheart,I’msureyouca

________ you don’t lose heart, I’m sure you can pass the coming examination.

A．Unless

B．If not

C．As long as

D．Although

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A．Devoting

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C．Devoted

D．Having devoted

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A．have acted

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A．while

B．the moment

C．since

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A．in

B．on

C．with

D．by

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A．screamed

B．scream

C．screaming

D．having screamed

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