She has been warning________the danger of driving the car________a high speed.
| A．against；at | B．against；with |
| C．of；at | D．of；with |
You may borrow this book ________ you promise to give it back.
| A．in case | B．so long as | C．as if | D．even if |
I have been keeping that photo ________ I can see it every day, as it always reminds me of my college days.
| A．which | B．where | C．whether | D．when |
Doing your homework is a sure way to improve your test scores, and this is especially true ________ it comes to classroom tests.
| A．as | B．since | C．when | D．after |
The roof fell ________ he had time to dash into the house to save his baby.
| A．as | B．after | C．until | D．before |
Tom make up his mind to get a seat for the football match ________ it means standing in a queue all night.
| A．as if | B．as though | C．even if | D．whatever |