I’m sure he must ____ (3. be) at home last night because the door was open when I ____ (4. come).

I’m sure he must ____ (3. be) at home last night because the door was open when I ____ (4. come).

Trả lời
I’m sure he must __ have been _ (3. be) at home last night because the door was open when I _ came _ (4. come).

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