Rober will start a driverless taxi service,so don’t feel surprised when you see a taxi coming_____a driver.
–Will the twins go to Tom’s birthday party next Sunday? --Not until they ________.
--How was your summer camp, Ben? --________. I made so many friends.
--Let’s finish off the rest of the cake.--None for me, thanks. I _____ more than enough.
--Have you decided where to go for your summer vacation? --Not yet. We_________ go to Mount Lu. It is a good place for vacation.
--What a nice coat! I’ll take it.--But you'd better _________ first. I’ m afraid it may be small for you.