________ three years and a half since they began to build the great bridge.
— Have you got any brothers or sisters? — ________.
Yang Liwei is the first man ________ the moon.
-I'm going to Hainan with my family in Spring Festival. -__________.
-Dad, could I stay out late tonight? -__________. You have to get up early tomorrow morning.
-Do you like to go to school __________? -No. I __________ to school every day.