______on ten years of observation and study, Professor Wang announces that everyone dreams every night, whether they realize it or not.
-- We’d better choose ______ one among all the red jackets; we don’t have enough money left.-- ______.
_____ the rapid development of agriculture in China, the output of grain, fruit, vegetables, and milk has sharply increased, which contributes to the drop in their prices.
If I can help ______, I prefer living in Hangzhou because the weather here is better than ______ of Wuhan.
Do you remember it was on ______ Saturday night that you saw such ______ bright moon?
Never before______ so highly successful in his attempts to forecast the weather accurately on a small scale.