—Look! Is that girl Alice?
—No, it ________ be her. She is on a tour in Beijing now.
can
can’t
must
mustn’t
You need_______ your homework this afternoon.
—How about watching TV at home? —It’s too _______.Let’s play football.
Betty often helps me __________ my English after class.
—Would you like to play games with me after school? —__________ , but I have to finish my homework first.
__________ join the English club to improve your spoken English?