___________ to carry out the plan in time, they will make careful prepatations.

The group of research workers are said to ________ to the dangerous nuclear radiation while they carried out their rescue task.

_________the answer, the boy, who asked the question, still stood with his hand ______.

Hearing the news , he hurried home, leaving the book_____ on the desk.

_____ by the heavy snowfalls, Chenzhou, a city in South China, was cut off from the outside, ________ water and electricity shortage.