—Look! Is that girl Alice?
—No, it ________ be her. She is on a tour in Beijing now.
can
can’t
must
mustn’t
--_______ is this backpack? --It’s yellow.
--______ is Jenny. -- I’m Gina.Nice to meet you.
--Is this _______ pencil case? --No, it’s ______ eraser.
--What’s this ________English? --It’s _______ apple.
代表“英国广播公司”的是:____。