See the flag on top of the building ? That was ___ we did this morning .
A when B. which C. where D. what
Ordinary woman though she is, she had won the award because she tries every means to make people _________ of the importance of the environment conservation.
| A．aware | B．careful | C．sensible | D．awesome |
It has been announced that all the candidates______ remain in their seats until all the papers have been collected.
| A．can | B．will | C．shall | D．should |
--- What made Bill so angry?
--- _____. His girl friend promised to come at 8:30, but she hasn’t come yet.
| A．Having kept waiting | B．Being kept waiting |
| C．To be kept waiting | D．Being kept waited |
---How long do you think it is ______he took up the job?
--- Half a year at least.
| A．when | B．before | C．that | D．since |
--- Is that the small town you often refer to?
--- Right, just the one ____ you know I used to work for years.
| A．that | B．which | C．where | D．what |