---I’ve heard some scientists have sent a spacecraft to Mars. ---Really? Has it arrived _____? A already B yet C still D ever
——What does your Chinese teacher look like? —— .
--It’s a fine day.Shall we go swimming? --_________.But we need to get home before six o’clock.
--Happy birthday! --_______________.
---What can I do for you? ---I’d like two _________________.
Jim ______ many new storybooks.