ทดสอบ Past Tense

คำถามข้อที่ 1 (1 คะแนน)
They were singing when I entered the room.
    

คำถามข้อที่ 2 (1 คะแนน)
I had been preparing for the presentation all morning when it started.
    

คำถามข้อที่ 3 (1 คะแนน)
He was watching TV when I called him.
    

คำถามข้อที่ 4 (1 คะแนน)
We were having breakfast when the power went out.
    

คำถามข้อที่ 5 (1 คะแนน)
She wrote an email yesterday.
    

คำถามข้อที่ 6 (1 คะแนน)
By the time I got there the concert had already finished.
    

คำถามข้อที่ 7 (1 คะแนน)
By the time I arrived, they had already left the party.
    

คำถามข้อที่ 8 (1 คะแนน)
I had been waiting for an hour when the bus finally arrived.
    

คำถามข้อที่ 9 (1 คะแนน)
They were talking about their vacation when I joined them.
    

คำถามข้อที่ 10 (1 คะแนน)
I saw him at the party last night.
    

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