We've tried it three times. Must we try it ________（第四次吗）?
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The accident happened on the afternoon of ________（七月七日）.
We are to have a small test on __________（星期一早晨）.
It's _________（乘车一小时）from my homtown to our university.
It's ________（三公里远）from our campus to the Bell Tower.
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