1.They are proud to have raised () () good son.A.so a B.such a C.a so D.a such2.How long () you () English books?-For 2 days.A.did borrowB.are borrowingC.have borrowedD.have kept
问题描述：
1.They are proud to have raised () () good son.
A.so a B.such a C.a so D.a such
2.How long () you () English books?
-For 2 days.
A.did borrow
B.are borrowing
C.have borrowed
D.have kept
答
1 B 固定搭配：such a/an +adj + n.
2 D 因为问的是how long是一段时间,所以要用延续性动词的完成时.