He was knocked down by a car ____ he saw it run toward him.
| A．before | B．after | C．when | D．till |
.
______is mentioned above, the number of the students in senior schools is increasing.
| A．Which | B．As | C．That | D．It |
.
. Our neighbor has ____ ours.
| A．as a big house as | B．as big a house as |
| C．the same big house as | D．a house the same big as |
.
To our pleasure, his parents came to accept the fact ____.
| A．at times | B．in time | C．on time | D．at a time |
.
_______ matters most in learning English is enough practice.
| A．What | B．Why | C．That | D．Which |
.
We are living in an age many things are done on computer.
| A．which | B．that | C．whose | D．when |