Relax yourself every day，__________ you'll be too tired to get good grades.
| A．and |
| B．or |
| C．for |
| D．but |
Don’t leave the sharp knife _____ our little Jane can get it.
| A．in which | B．to which | C．that | D．where |
You have no idea ______ for her safety.
| A．how anxious I have been | B．so anxious I have been |
| C．how I have been anxious | D．I have been so anxious |
We were swimming in the lake ______ suddenly the storm started.
| A．until | B．while | C．when | D．before |
There is clear evidence _______ the most difficult feeling of all to interpret is bodily pain.
A. what B. that C. if C. how
—My brother can only speak a few words of French.
—? He once worked in Paris for nearly a year, right?
| A．For what | B．How come | C．Why not | D．So what |