分类：教育/科学-外语学习
问题：IhaveaEnglishquestionIsn'tittime 
Isn't  time you---down to ---those papers?A get, make B to get;have madeC getting;having made D got;making 
回答：Isn't it time you---down to ---those papers?
A get, make B to get;have made
C getting;having made D got;making.选d,
看到疑问式，先转换成正常词序，It isn't time...就易看出答案。
it is (high) time +从句（sb.） did ，用过去式表式早该做.......
get down to +v+ing ,这里to是介词"开始/着手认真做某事",后跟名词或动名词,