暴急问定语从句怎么变?

暴急问定语从句怎么变?
Insert the present participle or the present participial phrase given in the brackets into the proper place in each of the following sentences.
1:Don't walk about in a train.(running)
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2:Those students may get better jobs.(knowing a forengn language well)
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3:The house was built by his uncle in 1950.(standing at the corner of the street)
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4:Many people are moving from the country to the cities.(grouing)
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5:Michael hardly knows the man.(buying hin a drink)
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6:Larry went to the railway station to meet his parents.(returning from *)
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