Try to spend your time just on the things you find .
| A．worth doing them | B．worth being done |
| C．worthy of doing them | D．worthy of being done |
She can’t help ______ the house because she’s busy making a cake.
| A．to clean | B．cleaning | C．cleaned | D．being cleaned |
When and where to build the new factory ____yet.
| A．is not decided | B．are not decided | C．has not decided | D．have not decided |
Tom as well as two of his classmates _____invited to the party.
| A．was | B．were | C．have been | D．had been |
The old ____well looked after by the government in China.
| A．is | B．are | C．has been | D．was |
______the room, a letter was seen lying on the desk.
| A．Entering | B．Entered | C．After entering | D．When he entered |