【題目】Walking alone in the dark, the boy whistled to __________ his courage.

A. hold up

B. keep up

C. set up

D. take up

【答案】B

【解析】句意：這個(gè)男孩獨(dú)自在黑暗中走著，吹著口哨為自己鼓氣。考查動詞短語的辨析。keep up表示“保持，使不低落”；hold up表示“舉起，支持，支撐得住”；set up表示“建立，創(chuàng)立，建造”；take up表示“開始從事，占據(jù)，繼續(xù)”。

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