初中英语句型转换!急The beatiful house belonged to Mr.Green three years ago.Mr.Green ------ ------ the beautiful house for three years.I found that it was difficult for him to stop smoking.I found ------- ------- for him to stop smoking.

The beatiful house belonged to Mr. Green three years ago.
Mr. Green --has---- ----had-- the beautiful house for three years.
I found that it was difficult for him to stop smoking.
I found ---it---- ---difficult---- for him to stop smoking.
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Mr.Green has owned the beautiful house for many years.
I found it difficult for him to stop smoking.

1.has had
2.it difficult

1.has had
2.it difficult
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Mr.Green has had the beautiful house for 3 years.
I found it difficult for him to stop smoking.

Mr. Green have owning the beautiful house for three years.
I found it difficulting for him to stop smoking.