Question

【題目】Not until recently _______the development of tourist-related activities in the rural areas.
A.they had encouraged
B.had they encouraged
C.did they encourage
D.they encouraged

Answer 1

【答案】C
【解析】句意：直到最近他們才鼓勵(lì)在農(nóng)村地區(qū)開(kāi)展與旅游業(yè)有關(guān)的活動(dòng)。當(dāng)not until所引導(dǎo)的時(shí)間狀語(yǔ)放在句首時(shí)，主句要使用部分倒裝。因此可以排除A項(xiàng)和D項(xiàng)，過(guò)去完成時(shí)是指過(guò)去的過(guò)去，不合題意，所以答案是C。