A.deliveredB.dissolvedC.separatedD.removed
A.The first man on MarsB.Human adaptation to spaceC.What makes a good astronaut?D.Difficulties encountered by Yuri Gagarin
A.higherB.biggerC.greaterD.larger
A.whoB.whenC.thatD.whose
A.makeB.haveC.giveD.bring
A.thereforeB.thusC.howeverD.instead
A.numberB.eachC.amountD.few
A.I’ll think about that.B.I don’t agree.C.I don’t think so.D.I can’t agree more.
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