It was the first time that Zhang Lin had spoken before hundreds of strangers and he spent several days __________ his lecture before he stepped onto the platform.
Mr. Green is said _____ an experiment to prove the new method of solving the problem when young.
You will see this product made in this factory _____ wherever you go.
_____ the big snake, the little girl stood under the tree _____ to death.
_____ as the most excellent student in her university, as most classmates had expected, made her parents very happy.
At no time does the salesgirl get up late in the morning, for she is always too busy _____ a good rest.