Interest is as      to learning as the ability to understand , even more so.

People who have _______ eyes should be very careful while applying eye makeup as it might lead to watering and redness.

—Growing population resulted in growing rubbish.—There is ______that rubbish will become the major threat to human beings in future.

(2009浙江宁波质检)Since David ________ downloaded a virus into his computer, he can not open the file now．

After a thorough search, the rescue team finally brought the mountain climbers back, __________.