He didn’t make ________ clear when and where the meeting would be held. . 

—How is Helen in the new school?—She is doing very well. There is        to worry about.

Make sure you’ve bought a towel and a bucket, and      for the cleaning.

—Do you like chatting with your friends on the telephone or MSN?—_______. I use QQ.

I’d appreciate          if you don’t tell anybody about this secret.