问题描述:
You really should have taken part in the competition.I know I_ ,but I_ too busy to
前文+spare any time .
A should have ;was
B should do;was
C should;had been
D should have ;had been
求详解.
前文+spare any time .
A should have ;was
B should do;was
C should;had been
D should have ;had been
求详解.
问题解答:
我来补答展开全文阅读