单项选择题
A.buy B.to buying C.buying D.to buy
A.rested B.reposed C.sat D.stood
A.at B.on C.to D.in
A.from B.into C.over D.beneath
A.each otherB.every otherC.on one way or anotherD.any other
A.did I B.had I C.I had D.I did
A.sit B.be sit C.sitting D.sits
A.another B.others C.some D.more
A.bachelor B.master C.doctor D.postdoctor
A.absent B.absentee C.absenting D.absence
A.principles B.principals C.principality D.prince