--- I ______ so busily recently that I ______ no time to help you with your math.
--- That’s OK. I can manage it by myself.
| A．have been working; have |
| B．have worked; had |
| C．am working; will have |
| D．had been working; had had |
Noneofthatmoneyonthetable____mine.
| A．is | B．are | C．been | D．were |
Ithinkmaths____veryinteresting.
| A．are | B．is | C．sound | D．seem |
All that I need _____ a large sum of money with which to buy my wife a diamond ring.
| A．are to be | B．is | C．are | D．were |
More than one hundred students ___ been sent to Japan since 2000.
| A．have | B．has | C．are | D．is |
Setting fire to the public buildings ___ highly dangerous and forbidden by law.
| A．are | B．is | C．has | D．were |