—We have booked a room for today and tomorrow.
—____， sir.
| A．I’m sure | B．My pleasure | C．It’s all right | D．I’ll check |
________ you understand this rule, you’ll have no further difficulty.
| A．Once | B．Unless | C．As | D．Until |
________ the man grew older, he lost interest in everything except gardening.
| A．With | B．Since | C．While | D．As |
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 |