—Look! Is that girl Alice?
—No, it ________ be her. She is on a tour in Beijing now.
can
can’t
must
mustn’t
Everyone in my class __________the poor boy without parents.
He did not write _________,though尽管he had _______________.
Mrs Brown is nice. Every day she tried to cook __for me during my stay in Canada.
I felt _____________when I heard the __________ news.
What bad weather it was! We decided _______