They put forward a lot of plans at the meeting, none of _______ carried out in their work.
| A．which | B．them | C．what | D．that |
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 |
It wasn’t until he was diagnosed with cancer ______ he realized the significance of health.
| A．when | B．that | C．which | D．what |
The sign over there says that no person ______ enter the area without official permission.
| A．may | B．must | C．will | D．shall |
Ten years ago the population of our village was ______ that of theirs.
| A．as twice large as | B．twice as large as |
| C．twice as much as | D．as twice much as |
The English spoken in the United States in only slightly different from ______ spoken in England.
| A．which | B．what |
| C．the one | D．that |