1、Unit4测试题一、单项选择(共15小题;共15分)1.Mysister longhair,butnowshewearsshorthair.A.usedtohaveB.hasC.usedtobeD.usedtohas2.--- you torideamotorbike?---Yes.ButlastmonthIsolditandboughtacar.A.Did;useB.Are;usedC.Do;useD.Did;used3.I keepdogsforprotection,butnowIkeepthemaspe