______ is that book?—About 10 Yuan.[ ]

Which of the two English dictionaries will you buy?——I’ll buy ________ of them, so I can give one to my friend Helen.

Zhang Lin has decided tohis bad habit of smoking．—That’s good news．I hope he can do it．

Mr Wang’s never been to Canada , has he?—________. He went there on business last week.

______ the ancient Egyptians built the pyramids puzzled people for centuries.