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Q. Fill in the following blanks with the correct tense of the verbs given in brackets.

1. The storm _______________(howl) since 4 O’clock.

2. I _______________(cook) food when he came in.

3. The patient ________________ (die) before the doctor came.

4. By 7 PM, Mary ________________ (finish) her homework.

5. I ________________________(prepare) for the examination for one year.