22. 【2020 •贵州铜仁市】—Look! Kangkang, that old man is crossing the crosswalk.
—Jane, let’s________ him.
A. helps B. to help C. helping D. help
【答案】D
【解析】句意：——康康快看！ 那个老人正在过马路。——简，让我们去帮他。考查非谓语动词。helps帮助，第三人称单数；to help不定式；helping动名词；help动词原形。根据“让某人做某事let sb do sth.”，故选D。