Train services are usually ________ and run regularly every day.
| A．reliable | B．reasonable | C．flexible | D．comfortable |
We expressed the hope ________ they would come and visit China again.
| A．which |
| B．that |
| C．when |
| D．if |
Everyone at the meeting agreed to the suggestion ________ a new bridge ________ built across the river.
| A．that; be |
| B．which; would be |
| C．as; should be |
| D．that; have been |
The belief ________ people find it more convenient to stop on Sundays ________ in the research.
| A．that; was proved |
| B．that; were proved |
| C．which; proved |
| D．whether; proved |
Tom came back with a message ________ there would be a test soon.
| A．when |
| B．which |
| C．as |
| D．that |
They have no idea at all ________.
| A．where he has gone |
| B．where did he go |
| C．which place he has gone |
| D．where has he gone |