They ______(collect)500 stamps so far.

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They______(collect)500stampssofar.They______(collect)500stampssofar.They______(collect)500stampssofa

They ______(collect)500 stamps so far.
They ______(collect)500 stamps so far.

They ______(collect)500 stamps so far.
have collected
注;so far 到止前为止,是现在完成时的标志
加油!不明白再问!

have collected so far是现在完成时态的标志词之一。

have collected,so far与现在完成时连用~目前他们已收集500枚邮票