大虾们帮忙拉.后面的是答案
thisisthefactory___weworkedayearago.
A.whereB.thatC.whichD.onwhichA
isthisschool____wevisitedthreeyearsago?
A.theoneB.whichC.thatD.whereA
theroom___helivesisnotverylarge.
A.thatB.whichC.whereD.whenc
morepeoplewilleatoutinrestrants___theydotoday.
a.thanb.whenc.whiled.asa
如果可以帮忙讲解下非谓语动词
好的话加分.