【題目】Simon made a big bamboo box __________ the little sick bird till it could fly.

A. keep

B. kept

C. keeping

D. to keep

【答案】D

【解析】句意：Simon做了一個(gè)大的竹盒子，用來(lái)裝那只生病的小鳥(niǎo)，直到它能飛�？疾榉侵^語(yǔ)動(dòng)詞。從語(yǔ)境看，這里用不定式作目的狀語(yǔ)，因此選D。

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