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4, Going swimming in the river in summer is interesting.

5, How about taking a shower instead of a bath to save water?

6, If today is Sunday, I'll go fishing with my brother.

7, The plumber helps me to fix the pipes yesterday (old??)

8, Although the weather is bad, they have a wonderful holiday.

9, If I were you, I would tell him the truth

10, I'll tell you the meeting if I see you tomorrow.

11, Tuan will get better grades if he study harder

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@su

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4. Go swimming in the river on summer is very interesting.

5. How about take a shower instead of a bath to save water.

6. If today is Sunday, I will go fishing with my brother.

7. (ko bt )

8. Although the weather is bad, we have a wonderful day.

9. If I am you, I will tell him the truth.

10. I will tell you about the meeting if I see you tomorrow.

11. Tuan will get better grades if he studies harder.