—Is that boy Alan?—No, it ______ be him. He left for Beijing yesterday.
As a student, I can’t afford ________ a new mobile phone.
All of them think Peter has difficulty________.
---- ________ you ________ my cake? ----Yes, I’ve _______ finished it.
Let’s go to Kun ming for vacation. It’s ______ too hot ______ too cold there.
I think this jacket looks nice ____you.