求救!The retired professor,___in his new booThe retired professor,___in his new book in the past three years ,hasn't realized the decline in his health.A.involved B.being involved C.having involved I like getting up early in summer.The morning air

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求救!The retired professor,___in his new boo
The retired professor,___in his new book in the past three years ,hasn't realized the decline in his health.A.involved B.being involved C.having involved
I like getting up early in summer.The morning air is so good____.这里为什么填to breath而不是 to be breathed呢?空气不应该是被吸吗?

这里是物体本身的属性 空气的属性就是被呼吸 所以用to do
比如 i have much homework to do
不用to be done吧

求救!The retired professor,___in his new booThe retired professor,___in his new book in the past three years ,hasn't realized the decline in his health.A.involved B.being involved C.having involved I like getting up early in summer.The morning air profe ssional manufacture是什么意思 The old man __________ ( live ) in the neighbourhood has retired. 求救：《the necklace》原文, I admit I only speak a little Spanish.请翻译:But I try to live out the life lessons I learned from Profe every day. Did the couple start any hobbies when they retired?改写句子,保持句意不变,Did the couple —— —— any hobbies when they retired, Considering the fact that he is in poor health,the company let him retired ahead.这里为什么是retired而不是retire? 求救 求救 求救: 求救 求救 求救, 求救, 求救! 求救 求救 求救