The doctor often tells him __________ more exercise.
为下列句子选择最佳答语。
Today is hot and _______in Beijing. A. sunny B. sun C. rain
—What are those? —They’re________. A. horse B. horses C. a horse
—What _____are they? —White. A. time B. kind C. colour
These shoes are nice. Can I try them_____? A. on B. in C. at
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