----Why does your brother stay at home every day?-----Because he is young go to school.
My friend John lives on ______ floor so he takes the elevator(电梯)home every day.
I want to know ______ she will look like when she grows up.
He couldn’t even afford a cup of tea because he had ______ money left.
We went to Quanjude to eat Beijing Duck ______ we arrived in Beijing.
Don’t you know it’s ______ useful book for English learners?