At the age of 14, Father had to leave school and start working. There would be no one to support the family _______ he not worked.
A.did B.has C.had D.was
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
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
Mensa is a society for bright people, and it aims to create a platform ______ many think can provide the chance to share their thoughts and ideas.
A.where B.which
C.what D.who
One of the firms I applied to has offered me a job but I _____ my options open until I hear from the others.
A.have kept B.will have kept
C.am keeping D.keep
