单项选择题
The energy gained-from the sun can then be used during the night to enable the necessary chemical reactions to ______ in his body.
单项选择题 It is absurd that women ______ be paid less than men for doing the same work.
单项选择题 ______ their terms, we would go bankrupt.
单项选择题 The ______ from the airport was really tiring because it was situated far from the city.
