One of the most important questions they had to consider was ______ of public health.
| A．what | B．this | C．which | D．that |
The police set about arresting the suspect ______ they found enough evidence to prove him guilty.
| A．immediate | B．as long as | C．the moment | D．as far as |
It’s bad ___________ for a man to smoke in the public places where smoking is not allowed.
| A．behavior | B．manner | C．action | D．way |
The fire, believed todue to illegal construction on the building’s roof, was brought under control after an hour.
| A．have occurred | B．occur |
| C．have been occurring | D．be occurring |
The schools themselves admit that not all children will be successful in the jobs ______ they are being trained.
| A．in that | B．for that | C．in which | D．for which |
As it turned out to be a small house party, we __________ so formally.
| A．needn’t dress up | B．shouldn’t dress up |
| C．were not necessary to dress up | D．needn’t have dressed up |