31._____either the twins or John going with me when the play _______here?
| A．Is; is put on | B．Are; is put on | C．Is; put up | D．Are; is put up |
Even more widespread _______ the copying of music and the pirating of software, especially with the development of new computer programs.
| A．is | B．does | C．are | D．do |
If someone spends his or her time, effort and money writing a book, for example, he or she deserves _______ for it.
| A．paying | B．to pay |
| C．having been paid | D．being paid |
Remember that ______ is better than cure, so brush your teeth at least twice a day and visit your dentist for regular check-ups.
| A．priority | B．privilege |
| C．principle | D．prevention |
It happens that I am quite familiar with the professor _______ to give us a speech on environmental protection next Monday.
| A．inviting | B．to be invited |
| C．being invited | D．having invited |
It is ______ that men and women should share the equal responsibility both at home and in the society.
| A．in black and white | B．child’s play |
| C．as easy as pie | D．as plain as day |