________ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.
| A．Examining | B．Examined |
| C．Being examined | D．Having been examined |
It seemed that I had become ________ my parents had wanted me to be.
| A． |
when |
B． |
where |
C． |
what |
D． |
whether |
Good evening, everybody. Professor King ________ his lecture in a moment, but let me introduce him first.
| A． |
delivered |
B． |
will be delivering |
| C． |
was delivering |
D． |
has been delivering |
In the lab, keeping things clean and organized can help provide a safer ________.
| A． |
system |
B． |
method |
C． |
investment |
D． |
environment |
Nowadays many people travel across China ________ high-speed trains.
| A． |
on behalf of |
B． |
by means of |
| C． |
at cost of |
D． |
in terms of |
In the spring, a season ________ we are 1earning new rhythms of life ， many of us find comfort in the natural world.
| A． |
when |
B． |
where |
C． |
what |
D． |
which |