The car crashed into the back of a truck and the driver was trapped for about an
hour being taken to hospital.
| A．when | B．before | C．after | D．until |
We have come to the __________ that it would be unwise to accept his idea.
| A．suggestion | B．conclusion |
| C．plan | D．promise |
Mary is a (n) __________ customer, so the waiter knows her likes and dislikes.
| A．usual | B．ordinary |
| C．common | D．regular |
The number of students applying for this position __________ 320.
| A．added | B．added up |
| C．added to | D．added up to |
We offered these students a summer course, aimed __________ improving their spoken English.
| A．to | B．in |
| C．at | D．for |
__________ to go to university, we must work hard.
| A．So as | B．in order |
| C．So that | D．in order that |