When we catch cold, how does our body work hard? A.Our runny nose stops our breath. B.Our
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请在第_____处填上正确答案。 A.country B.universe C.world D. area
Scientists say when we catch cold, __. A.taking medicine B.seeing a doctor C.leaving it
Tom writes as __ as her brother. A.clear B.more clear C.clearly D.most clearly
The bread and butter served for breakfast. A.are B.is C.have D.had been