--The weather has been very hot and dry.
--Yes. If it had rained even a drop, things would be much better now! And my   vegetables   .
A．wouldn't dieB．didn't die
C．hadn't diedD．wouldn't have died
D

試題分析：考查虛擬語氣的用法：if條件句用的是had done，說明是和過去相反的虛擬，主句要用would have done，句意是：--天氣一直很熱很干，--是的，如果能下一滴，情況就好多了。我的蔬菜就不會(huì)死了。選D。
點(diǎn)評(píng)：情態(tài)動(dòng)詞的完成式是高中階段的重難點(diǎn)之一，需要考生熟記它們的用法，在各類考試中經(jīng)常出現(xiàn)，它主要用于表示對(duì)過去情況進(jìn)行推測(cè)或責(zé)備等。
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