1.Ba is always forgetting his homework.

2.They are taking part in fetching the water- contest.

3.I think computers are useful.

4.Turn off the lights before going out.

II.

1.The poem was written by Clement Clarke Moore in 1823.

2.The children said to wait for the school bus.

3.Do you mind borrowing your dictionary?

4.I haven't played tennis since 1990.

I.

1) always/ homework/ Ba/ is/ his/ forgetting/. /

-> Ba is always forgetting his homework.

2) contest/ taking part in/ They/ the water-fetching/ are/. /

-> They are taking part in the water-fetching contest.

3) I/ useful/ think/ are/ computers/./

-> I think computer are useful.

4) before/ lights/ Turn/ going/ off/ the/ out/./

-> Turn off the lights before going out

II.

1. Clement Clarke Moore wrote the poem in 1823

-> The poem was written by Clement Clarke Moore in 1823

2. "We are waiting for the school bus", said the children.

-> The children said they were waiting for the school

3. Do you mind if I borrow your dictionary?

-> Do you mind if I borrowing your dictionary?

4. The last time I played tennis was in 1990.

->I haven't played tennis since 1990.

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