I will have to close my clothes shop ________ my business improves.

A. which    B. who    C. whom    D. whose

A. washing; needn't    B. washing; needn't to

C. to be washed; don't need    D. to wash; don't need to

A. Try                 B. To try

C．Trying              D．Tried

A.东汉时期 B.三国时期 C.西晋时期 D.南北朝时期

A. confident    B. modest    C. generous    D. curious

A.印刷术 B.造纸术 C.甲骨文 D.经济繁荣

A.颁布“推恩令” B.设置刺史监察地方官员

C.在全国各地设盐铁官 D.“罢黜百家，独尊儒术”

A.新疆 B.西藏 C.台湾 D.内蒙古