. If law and order _____, neither the citizen nor his family is safe.
| A．are not preserved | B．is not preserved |
| C．were not preserved | D．have not been preserved |
A lot of children never fully ______ their mothers until it is too late.
| A．urge | B．appreciate | C．accuse | D．motivate |
______ I admit that there are problems, I don't agree that they cannot be solved.
| A．As | B．If | C．While | D．When |
_______I had time, I would have visited the beautiful lake again.
| A．If | B．Unless | C．Had | D．When |
Since everybody is clear, there is no _____ in discussing the question any further.
| A．point | B．possibility | C．wonder | D．doubt |
Hollywood, in Los Angeles, is _____most entertainment is made.
| A．which | B．what | C．when | D．where |