__________ has recently been done to provide more buses for the people, a shortage of public vehicle remains a serious problem.
| A．That | B．What |
| C．In spite of what | D．Though what |
At first he refused to admit he had stolen but when he was shown the videotape he ______ and admitted everything.
| A．broke down | B．broke away | C．broke up | D．broke out |
Only when _________ be possible to sign the papers.
| A．does the boss come will it | B．the boss comes will it |
| C．has the boss come it will | D．the boss comes it will |
Glasses are __and must be handled with great care.
| A．abundant | B．diverse | C．extinct | D．fragile |
The school rule states that no child shall be, unless _by an adult, allowed out of the school during the day.
| A．to be accompanied | B．accompanying |
| C．accompanied | D．being accompanied |
Stephen Hawking believes that the earth is unlikely to be the only planet life has developed gradually.
| A．whose | B．where | C．which | D．what |