We were told to write in ink, that we should use but one side of the paper, and we should endorse out papers in the proper manner.()
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If you feel hungry, you should eat something.()
I won’t be able to go on holiday with my mother being ill.()
There remains the question why one of the jewels are missing.()
If we hadn' t made adequate preparations, we shouldn' t dare to do the experiment next week。()