Ⅰ.单项选择
1．—Can you come to my birthday party?
—______.
A．Yes，I can't B．Sorry，I can't
C．No，I can D．Sorry，I can
2．I'm going to ______ out with my friends this afternoon.
A．hang B． hung
C．hanged D．hanging
3．I'm too tired，so I ______ sit down and rest every five minutes.
A．must B．had to
C．have D．ha ve to
