In that school, English is compulsory for all students, but French and Russia are ____ .
| A．special | B．optional | C．regional | D．original |
All Hangzhou drivers are required to _________ the departments of traffic control of any changes in their personal information.
| A．inform | B．contact | C．perform | D．tell |
When we got there, he was about to leave. So he only had time to explain _______ to us how he ________ our plan.
| A．impatiently; like | B．limitedly; thought about |
| C．carelessly; thought of | D．roughly; found |
Later in this chapter cases will be introduced to readers_________ consumer complaints have led to changes in the law.
| A．where | B．when | C．who | D．whose |
Sometimes people have no belief ________ his choices about their eating habits.
| A．on which to base | B．which to base on | C．to base on | D．to be based on |
Co-operation or teamwork, the importance of which is often ________, plays an important part in football matches.
| A．stressed | B．thought of | C．paid much attention | D．talked |