中學(xué)生世界九年級(jí)英語滬教版54制
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One day when I came home, Shadow didn't show up to greet me. I soon learnt that Shadow was sick.
Since
it was suffering from heart failure, we took it to the animal clinic immediately.
Then one day, the vet called us that Shadow had passed away. On hearing the news, I cried my heart out.
No other pet has ever been able to
replace
my beloved Shadow since then.
答案：5. Since
解析：根據(jù)語境“因?yàn)樗加行呐K病，我們立刻帶它去了動(dòng)物診所”，since表示“因?yàn)椋热弧?，所以填Since。
6. replace
解析：根據(jù)語境“沒有其他寵物能取代我心愛的Shadow”，replace意為“取代”，be able to后接動(dòng)詞原形，所以填replace。
