I heard Lucy ________ happily in her room when I passed her house.
—What about ________ shopping on Sunday?—Good idea!
—________ you play chess?—Yes, I can.
Which floor do you live ______ and which flat do you live ______ ?
Would you like to share the room ______ her brother ?A.with B.anD. C.of D.on
Which of them isn’t a capital city ?