Only in this way will you get your valuable ideas __________ ; or your time will be wasted.

After the long journey, we felt fine    being a little tired.

You may ask the teacher for help ____ difficulty.

____ the tomb, his bird was eaten by a snake.

I’ve heard that we can see beautiful stars ____ clear nights.

I’ve heard that we will set out _________ the morning of March 25th .

I remember sometimes feeling _____ to grow up and be independent.

My friend Tom stays at Internet bars above 8 hours every day ______, really a netter(网虫).

Although this medicine can cure you ____ your illness, it has a bad effect   _____you.

The square was so named ____a famous black leader in history.