He often saw his mother __________ clothes .
Trees and flowers ________every year to make our country more beautiful.
—Mr. Smith, would you please speak a little more ________?—Sorry! I thought you could follow me.
—Liu Qian is good at doing the tricks with the cards.—Yes, but if you watch carefully, you can see _______he does them.
My bike is broken, so I have to go to school _________ my mother's.
— What do you want to eat for lunch? I will prepare it earlier today. — You_____, mum. Let’s go out to have something different.