二、单项填空(共15分)21. ---I’m sorry I shouldn’t have laughed at you the day before. --- _________ .
John, I_______ if you could lend me some money until I get paid.
It’s only_______ 5 minutes’ walk from my home to_______ Green Company.
--- I can’t believe it’s Ann! --- Me, too. She is no longer ______ she was 20 years ago.
My book isn’t on my desk. Where _______ I have put it?
Professor Zhang, accompanied by his students, ___________ in the lab.