用适当的情态动词填空
1.If you __________answer the question,please put up your hand.
2.-----_________ we go now,Mr.Li?-----Yes,you can.
3.-----Is this blue bike yours?----No,my bike is black.I guess it ______ be Lucy’s.
4.----________I arrive here at 8:30am tomorrow?----No,you needn’t.
5.----________ you please make me you bed,Tom?----Sure.
6.----I have a toothache and I don’t want to eat anything.----You _______ see a dentist first.