Dark clouds the sunlight. It seemed as if it was going to rain.A. left outB. picked outC.

问题补充：

Dark clouds the sunlight. It seemed as if it was going to rain.

A. left out

B. picked out

C. blocked out

D. put out

答案：

A. left out

B. picked out

(答案→)C. blocked out

D. put out

解析：考查动词短语辨析。句意：乌云遮住了太阳。看起来像要下雨了。leave out遗漏；pick out检出；block out阻挡，遮住；put out扑灭。如：We put a tarpaulin across the window to block out the sun-light.我们将涂焦帆布横挂在窗子上遮住阳光。故选C。