4．The couple as well as all their family members were informed of the details on Sunday morning, _________a meeting was held.
| A．in which | B．after that | C．from which | D．after which |
—Must I turn off the gas after cooking?
—Of course, you can never be ____careful with that．
| A．enough | B．very | C．so | D．Too |
My mother is always warning me when I go out, “Don’t get off the bus ____it is stopping.”
| A．until | B．before | C．while | D．After |
A man hurried in and asked, “Is there a hospital around I can get some medicine for my wounded hand?”
| A．that | B．which | C．what | D．where |
The car number 57777 is a special number, ____, I think, passers-by can easily remember.
| A．one | B．what | C．that | D．it |
The government spokesman has to____ his words before responding to reporters.
| A．pass | B．cover | C．weigh | D．Express |