--- People should stop using their cars and start using public transport．
--- _______．The roads are too crowded as it is．
| A．All right | B．Exactly | C．Go ahead | D．Fine |
___________ has always been expected, he has finally achieved his dream, ________ makes his parents so proud.
| A．As; which | B．Which; which |
| C．Which; as | D．As; as |
His sister left home in 1998, and ____________ since.
| A．had not been heard of | B．has not been heard of |
| C．had not heard of | D．has not heard of |
We are not ready to go into production yet, for the new switch mechanism isn’t fully ______.
| A．tried out | B．tested out |
| C．worked out | D．turned out |
Helen always helps her even though going to school ________ most of her day.
| A．turns up | B．makes up | C．saves up | D．takes up |
The policeman came up to the house, whose door was open, ________ there for a while, and went in.
| A．to stand | B．standing | C．stood | D．stand |