问题补充：
30. He is badly down these days. This sentence probably means .
A. He is seriously ill these days.
B. He is in low spirit these days.
C. He fell down and was seriously hurt.
D. He didn’t study hard these days.
答案：
A. He is seriously ill these days.
(答案→)B. He is in low spirit these days.
C. He fell down and was seriously hurt.
D. He didn’t study hard these days.
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