7．More visitors ___________ to Beijing since the repair project was completed．（　　）
A．were broughtB．are brought
C．will be broughtD．have been brought

分析 自從修繕工程完成后，更多的游客被帶到了北京．

解答 答案是D． 考查被動語態(tài)，主語visitors與動詞bring 之間是被動關(guān)系，since引導(dǎo)的時(shí)間狀語中主句要用have+過去分詞，所以答案選D．

點(diǎn)評 被動語態(tài)由"助動詞be+及物動詞的過去分詞"構(gòu)成．被動語態(tài)的時(shí)態(tài)變化只改變be的形式，過去分詞部分不變．疑問式和否定式的變化也如此．掌握各種時(shí)態(tài)的被動語態(tài)是解題的關(guān)鍵．

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