答对给财富 1.( )she came in,l was writing a letter A.When B.While C.since D.where2.( )_____ you think you konw nothing,you begin to know somethingA.where B.when C.before D.While 3.( )_____ there is no rain,lt's difficult to plant treesA.wher
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答对给财富 1.( )she came in,l was writing a letter A.When B.While C.since D.where2.( )_____ you think you konw nothing,you begin to know somethingA.where B.when C.before D.While 3.( )_____ there is no rain,lt's difficult to plant treesA.wher
答对给财富 1.( )she came in,l was writing a letter A.When B.While C.since D.where
2.( )_____ you think you konw nothing,you begin to know something
A.where B.when C.before D.While
3.( )_____ there is no rain,lt's difficult to plant trees
A.where B.when C.which D.how
答对给财富 1.( )she came in,l was writing a letter A.When B.While C.since D.where2.( )_____ you think you konw nothing,you begin to know somethingA.where B.when C.before D.While 3.( )_____ there is no rain,lt's difficult to plant treesA.wher
A B A
1.A
2.B
3.B