---That black T-shirt with Yao Ming’s picture on it ____ belong to David. He likes him very much.---No, it ____ be his. He hates black colour.
_____can work out the problems because _____of the problems is easy.
I have to look after____and ____sister today.
The doctor gave me some medicine____my cough and told me to take it _____a day.
Shanghai is bigger than ____city in Japan.
My uncle is really busy. He_____comes to our home these days.