________ they ________ a cow yesterday？
| A．Did；milked |
| B．Did；milk |
| C．Do；milked |
| D．Do；milk |
---I’ve heard some scientists have sent a spacecraft to Mars.
---Really? Has it arrived _____?
A already B yetC still D ever
---What do you think of the book? ---________________
A I’m sorry. B it’s wonderful. C Guess what! D Thank you.
Hurry up! The plane is _______ in fifteen minutes.
A thinking of B waiting for C taking off D walking up
---You’d better read more English magazines to improve your reading.
---______________
A Why don’t you read it?B That’s a good idea.
C Can I help you?D I’m sorry to hear that.
There are some _______ in your writing. You’d better correct them now.
A languages B lettersC numbers D mistakes