--- Which of the two English dictionaries will you buy ?--- I’ll buy ___ of them , so I can give one to my friend , Helen .A either B neither C all D .both
----Did you go to Jack’s birthday party? ---No, I____.
--- Did I lock the door when I went out? --- Yes, you did. I saw you _____ it.
---You have to work very hard in your job, don’t you? ----Yes, but I don’t mind that. I _____ hard.
--- I don’t know ______ my telephone number. --- Through a friend of mine.
---David,is that man your Chinese teacher? ---It___________ be him.He’s having a meeting.