I didn’t have to work all weekend — I did it by _______.
| A．chance | B．choice |
| C．accident | D．myself |
Either you or I _____going to the teachers‘ office after class.
| A．am | B．is | C．are | D．will |
Tom as well as two of his classmates _____invited to the party.
| A．was | B．were | C．have been | D．had been |
Both the secretary and the manager _____agreed to attend the meeting.
| A．has | B．have | C．are | D．was |
The secretary and manager ____very busy now.
| A．is | B．are | C．was | D．were |
The old ____well looked after by the government in China.
| A．is | B．are | C．has been | D．was |