问题标题：
在必要的地方填上for或since.1.1.Mymotherhasworkedinthishospitalever____________itopened.2.Wefinishedourhomework_______twodaysago.3.JohnhasstudiedFrench_________threeyears.4.UncleLihasbeenhere________tenyearsago.5
问题描述：
在必要的地方填上for或since.
1.1.Mymotherhasworkedinthishospitalever____________itopened.
2.Wefinishedourhomework_______twodaysago.
3.JohnhasstudiedFrench_________threeyears.
4.UncleLihasbeenhere________tenyearsago.
5.TheywenttoLondon________justover5months.
6.Wehaveknowneachother_______wewerechildren.
7.Thetrainhasbeenaway_________halfanhour.
8.ShehasbeenaLeaguemember_________oversixyears.
沈新权回答：
1.since从……时候
2.since在
3.for表示一段时间
4.since从时候
5.for同3
6.since同1
7.for同3
8.for同3
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