1. He worked out the answer. It was clever of him. It was __________________________________ 2. He was crossing the road. I caught sight of him. I noticed _______________________________ 3. Why have you thrown up your job? You’re mad. You are ________________________________ 4. Contacting her at work is usually quite easy. She is _________________________________ giải hộ em ạ

1. He worked out the answer. It was clever of him. 

=>It was clever of him to work out the answer.

2. He was crossing the road. I caught sight of him.

=>I noticed him crossing the road.

3. Why have you thrown up your job? You’re mad.

=>You are mad to throw up your job.

4. Contacting her at work is usually quite easy.

=>She is usually quite easy to contact at work.

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