The situation forced my mother and I exchanged our roles as child and caretaker, making me grow up much faster than the _____ child.
| A．average | B．ordinary | C．common | D．usual |
The Smiths ______ their breakfast when the doorbell rang.
| A．had | B．has been having | C．are having | D．were having |
The majority of doctors ______ smoking is harmful to health.
| A．are believed | B．had believed | C．has believed | D．believe |
EitherJimorI ____goingtohelpthefarmerswiththeorangeharvestthisafternoon.
| A．was | B．am | C．is | D．are |
A good deal of money ____spent on books.
| A．have | B．has | C．have been | D．has been |
It ____I who _____leaving for London.
| A．is…is | B．am…is | C．is…am | D．am…am |