﹣Why are the windows so dirty?﹣Because we __________ them for a long time.A.have cleanedB.haven’t cleanedC.didn’t clean
--Jim is good basketball.---But he is weak in football.
---It’s 10.00 p.m.Say′′to your parents.---OK, I will.
______books aren’t old.______ are new.
Thank you for ______________ me about it.
---It’s time.---I’m coming, mum.