当你向你的同学借橡皮时,你的同学借给你之后,你要对他说一声:A. Thanks!B. I don’t know.
()I _____ heavy now. I have to _____ more vegetables.
()My birthday is _____ April 10th.
()Your brother looks _____ younger than you.
()Would you mind _____ the window for me?
() It is very ______ of you to make such stupid mistakes.