much work you have to do every day，do get enough sleep．
| A．However | B．Whichever | C．Whatever | D．Whenever |
He spent at least as much time reading as you _______on line yesterday.
| A．had to chat | B．do chatting |
| C．had chatted | D．did chatting |
In front of the house _____ with a history of 100 years．
| A．does a tall stand | B．stands a tall tree |
| C．a tall tree is standing | D．a tall tree stands |
I’m really a bit worried because I have no idea what my parents’ _________ will be to my poor examination result．
| A．expression | B．reaction | C．appearance | D．expectation |
Our government has taken some measures to overcome the lack of electricity, but it may take some time _____ we have enough power．
| A．since | B．after | C．unless | D．before |
All the task ______ ahead of time, they decided to go on holiday for a week.
| A．had been finished | B．were finished |
| C．having been finished | D．been finished |