Private cars will be required to stay off roads one out of five weekdays ____ the traffic pressure.
| A．to reduce | B．reducing | C．reduced | D．reduce |
They went on well at first but eventually everything ______ they had worried about happened．
| A．which | B．what | C．that | D．when |
The police got to _________ was once an old yard_________ the workers used as a store.
| A．what; where | B．which; where | C．that; that | D．what; which |
It is really hard to find a nice place in this city we can have a picnic.
| A．where | B．that | C．which | D．when |
A person ______ e-mail account is full won’t be able to send or receive any e-mails.
| A．who | B．whom | C．whose | D．whoever |
I have reached a point in my life I am supposed to make decisions of my own.
| A．which | B．where | C．how | D．why |