His brother met him at the Great Theatre yesterday afternoon, so he ____ have attended your lecture. 

— I’ve taken someone else’s green sweater by mistake. — It ______ Harry’s. He always wears green. 

 Keep up good state of mind even if you___________ fail plenty of times.

— Are you still going to Shanghai for the Spring Festival?— Yes, but I really _____ because I have a lot of things to deal with.

He ________ the window of our classroom yesterday because he didn’t come to school．