The scientific research on how to protect the rare animals is ________. Many scientists are working hard to find new way to raise the animals by man.
—Thank God this school term is coming to an end! —Yeah, after all that hard work, we all ________a holiday.
—Imagine you are outside whenearthquake comes. What should you do? — Go toopen space away from buildings or trees.
--- The drought situation has been severe these days. --- If it had rained even a drop, things would be much better now and many crops ____.
--- You’d better not buy a house these days. --- ___________. I think it’s a good time.
He is perfectly __________ to live in the mountains and paint pictures all day, even though he is of poor health.