— Mary, whose photo is it?
—It ______ be Lu’s. Those are her parents.
A．can B．should C．must D．need
Betty’s brother isn’t old enough to look after ____.
A．yourself B．herself C．himself D．themselves
— Why must I wear my school uniform, mom?
— Because you are a student. You are _________ to wear your own clothes to school.
A．allowed B．not allowed C．allow D．not allow
— Helen, your English is pretty good. How can I improve my English?
—I think you can improve your English ______ reading more.
A．at B．by C．on D．for
Super Junior is ________ great group. I really like their songs and dances.
A．不填 B．an C．the D．a
—— ______ TV do you watch every day?
——About two hours.
A．How much B．How many
C．How long D．How often
