1.Several new underground lines______to welcome the World Expo in Shanghai recently.A.have been built B .were built C.are built D.will be built2.We______eight English songs in the hobby group by the end of last monthA.have learned B.learned C.had lea
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![1.Several new underground lines______to welcome the World Expo in Shanghai recently.A.have been built B .were built C.are built D.will be built2.We______eight English songs in the hobby group by the end of last monthA.have learned B.learned C.had lea](/uploads/image/z/5819058-18-8.jpg?t=1.Several+new+underground+lines______to+welcome+the+World+Expo+in+Shanghai+recently.A.have+been+built+B+.were+built+C.are+built+D.will+be+built2.We______eight+English+songs+in+the+hobby+group+by+the+end+of+last+monthA.have+learned+B.learned+C.had+lea)
1.Several new underground lines______to welcome the World Expo in Shanghai recently.A.have been built B .were built C.are built D.will be built2.We______eight English songs in the hobby group by the end of last monthA.have learned B.learned C.had lea
1.Several new underground lines______to welcome the World Expo in Shanghai recently.
A.have been built B .were built C.are built D.will be built
2.We______eight English songs in the hobby group by the end of last month
A.have learned B.learned C.had learned D.would learn
要答案还有原因
1.Several new underground lines______to welcome the World Expo in Shanghai recently.A.have been built B .were built C.are built D.will be built2.We______eight English songs in the hobby group by the end of last monthA.have learned B.learned C.had lea
A
recently 是现在完成时的标志,所以要用have +过去分词
其次,这个句子主语是物,要用被动语态.
所以选A
C
by+表示时间的词就是完成时的标志.
by+将来的时间就是将来完成时
by now就是现在完成时
by+过去的时间就是过去完成时
所以,by the end of last month就是过去完成时的标志.选C