—Why do you look so worried?
—My computer broke down and my essay ______ unfinished since.
| A．was left | B．has left | C．left | D．has been left |
It is getting late. I am afraid I must be going now!
OK,________________
| A．Take it easy | B．Take time out | C．So long | D．Stay longer |
The children are full of ______. They have been playing all day long without resting.
| A．energy | B．power | C．force | D．strength |
I am considering changing to a more interesting job, as the present job, which requires a lot of _______, nearly bores me to death.
| A．repetition | B．instruction | C．impression | D．appreciation |
___________ made his mother worried.
| A．The child was addicted to playing computer games |
| B．The child’s being addicted to playing computer games |
| C．The child addicted to playing computer games |
| D．The child’s being addicted to play computer games |
There is some doubt _________ Mr Zhang will sign the contract with us.
| A．when | B．whether | C．if | D．that |