14. --I tried many times, but I still failed in the experiment. --Don’t be discouraged. ____ and the problem will be settled.
Evidence has been found through years of study __________ children's early sleeping problems are likely to continue when they grow up.
(2009·重庆) We should consider the students' request __________ the school library provide more books on popular science.
(2009·湖北) His efforts to raise money for his program were __________ because no one showed any intention to take a cent out of their pockets.
The fact has worried many scientists __________ the earth is becoming warmer and warmer these years.
(2009·浙江)—Is there any possibility __________ you could pick me up at the airport?—No problem.