1.Mary learned Chinese for about three years,___is,from 2002 to 2005.A.this B.that C.it D.which2.We are told that he will come tonight.If so ,we will hold the meeting .if __,there won't be any meeting tomorrow.A.that B.not C.don't D.won't

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1.MarylearnedChineseforaboutthreeyears,___is,from2002to2005.A.thisB.thatC.itD.which2.Wearetoldthathe

1.Mary learned Chinese for about three years,___is,from 2002 to 2005.A.this B.that C.it D.which2.We are told that he will come tonight.If so ,we will hold the meeting .if __,there won't be any meeting tomorrow.A.that B.not C.don't D.won't
1.Mary learned Chinese for about three years,___is,from 2002 to 2005.A.this B.that C.it D.which
2.We are told that he will come tonight.If so ,we will hold the meeting .if __,there won't be any meeting tomorrow.A.that B.not C.don't D.won't

1.Mary learned Chinese for about three years,___is,from 2002 to 2005.A.this B.that C.it D.which2.We are told that he will come tonight.If so ,we will hold the meeting .if __,there won't be any meeting tomorrow.A.that B.not C.don't D.won't
1,that is 即,相当于that is to say
2.B.“如果不”跟前面if so相对应.
if not 在此相当于If he will not come,省略了.

D
B

1.D,这是非限制性定语从句吧~
2.B,if not 是省略句~习惯性用法

1.B, 非限制性定语从句
2.B, if not 习惯性用法