The water of the Miyun Reservoir is regularly ______ to ensure the security of Beijing people’s drinking water.
| A．tested | B．checked |
| C．examined | D．inspected |
Having lived in China for 8 years, Helen has a good ____________ of both English and Chinese.
| A．ability | B．guidance | C．command | D．program |
We had a big meal in afinerestaurant last Monday andthetotal cost ____________ $500.
| A．came through | B．came in |
| C．came out with | D．came to |
You’ve failed to do what you ___________ to and I’m afraid the teacher will blame you.
| A．will expect | B．will be expected |
| C．expected | D．were expected |
It may be 5 or 10 years __________ it is possible for people to find a space station on the moon.
| A．since | B．before | C．after | D．when |
Whether by accident or ___________,he arrived too late to help us.
| A．purpose | B．aim | C．design | D．chance |