It is difficult for us to learn a lesson in life ________ we’ve actually had that lesson.
| A．until | B．after | C．since | D．when |
One can always manage to do more things, no matter __________ full one's schedule is in life.
| A．how |
| B．what |
| C．when |
| D．where |
__________ I have to give a speech, I get extremely nervous before I start.
| A．Whatever |
| B．Whenever |
| C．Whoever |
| D．However |
We are aware that，__________，the situation will get worse.
| A．if not dealing with carefully |
| B．if dealt not carefully with |
| C．if not carefully dealt with |
| D．if not carefully dealing with |
A man does not know the difficulty of anything __________ he does it personally.
| A．although |
| B．if |
| C．because |
| D．unless |
You can borrow my car __________ you promise not to drive too fast.
| A．unless |
| B．even if |
| C．in case |
| D．as long as |