1 because of the heavy snow, the visitors can only wait in the air port until the snow stopped in mid night
2 after the train was going for 20 minutes , the 2 boys found it was to hangzhou instead of their hometown suzhou.
3 the same pronounciations in english always cause misunderstandings among speakers.
4 the driver heard the abnormal sound from the engine, so he stopped the car by side and checked it . at last , everything was back to normal again
5 when mr li realized he made a mistake which was usually made by the people who take english as the second language, he was embarrassed.
6 mary wanted to learn japaness and hoped to learn it wellsoon. but she found it hard soon and she could not master it in a short time.
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