1.—Computersaren'twonderfulmachines,arethey?-_______.
A.Yes,theyare.B.No,theyaren'tC.Yes,theyaren't.
D.No,theyare.
2.Themusicmademethinkofthe____ofarunningstream.
A.soundB.noiseC.shoutD.voice
3.-CouldyoupleasehelpmewithmyEnglishthisweekend?-Sorry,I_____.Ihavesomethingimportanttodo.
A.FindB.FindingC.tofindD.Found
4.Theyoftensingfortheirown_____.(amuse)
5.I'lldoeverything____tohelpyou.Youneedn'tworrytoomuch.(impossible)
最好说明理由