David didn’t give up ______ he had failed in the experiment four times．

David didn’t give up ______ he had failed in the experiment four times．

#57729

while

though

since

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Stand over there, ______ you will get a better view of the whole city.

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and

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__________ the story is short and there are few new words in it, it is difficult to understand.

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In China, red represents power ______ it is also the color of strong feelings.

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Milk quickly goes bad in summer        it is in a fridge(冰箱).

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Tom is only four years old, __________ he can draw beautiful pictures.

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