题干
--Johnson, come and look at the sea! It is beautiful, isn’t it?
-- Absolutely! If only I ______ here by the sea.
-- Absolutely! If only I ______ here by the sea.
A：lived
B：live
C：had lived
D：will live
答案(点此获取答案解析）
A
2H2↑+O2↑．制得的氢气可用于燃料电池．试回答下列问题：