你想知道盒子里装的是什么,你会问:________A.Who's that? B.Who's this? C.What's in the box?
smart birds they are ! A. How B. How about C. What
your books on the desk ? A. Is there B. Are C. Are there
Mary often helps us our English . A. with B. to C. or
Where the medicine ? A. are B. be C. is
There aren’t people in the room . A. a lot of B. many C. much