当你进了Ms.Miller的办公室,她说:Sit down,please!你应该回答: A.Yes,I sit down. B.Thanks. C.please
—— How does Jack usually go to school? —— He ________ ride a bike, but now he is used to ______ there.
You should _______ the bus when it stops.
We really don’t know ________ . Could you help us?
—— I think running is an easy way to keep healthy. —— __________ , but Bill doesn’t think so.
Don’t forget _________ your bed after you get up.