there___a group of people ____vacation .A.are,in B.is,of C.are,of D.is,on
问题描述:
there___a group of people ____vacation .A.are,in B.is,of C.are,of D.is,on
答
there___a group of people ____vacation .A.are,in B.is,of C.are,of D.is,on