We have very strict quality control and anything imperfect is________，so customers feel secure about our products.
| A．denied | B．rejected |
| C．deserted | D．refused |
How did you manage to get to school on time ______ you missed the school bus?
| A．when | B．if | C．once | D．because |
In no case ______ allowed to go on.
| A．should such a thing be | B．should not such a thing be |
| C．such a thing should not be | D．such a thing should be |
He left Europe _____ World war II broke out.
| A．during | B．the year | C．while | D．there |
______ the poem a second time, the meaning will become clearer to you.
| A．You having read | B．While reading | C．When you read | D．If reading |
Vicky, _____ born in China, lived and practiced law in public.
| A．was | B．he was | C．although | D．who he was |