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1. Because of the heavy rain, they couldn't play soccer.

2. She has such a rich father that she is happy.

3. Mai was pleased that she got an A for her assignment. .

4. I suggest organizing the show to raise monry.

5. I think energy-saving bulbs should be used to save electricity. 

6. heavily

7. I suggest taking a shower instead of a bath to save water.

8. I suggest that you should take a shower instead of a bath to save energy.

9. Since the weather was fine, they decided to go on a picnic.

10. Let's have lunch at that restaurant tonight.

1/ They couldn't play soccer because it rained heavily(Using"because of")
Because of the rain, they couldn't play soccer.
2/ She has a rich father .she is happy (Using"that -clause")
She has a rich father that she is happy
3/ Mai/was/pleased/she/cot/for/an A/her assignment/that (make a complete sentence)
Mai was pleased baucese she got an A mark on her assignment .
4/ Let's organize the show to mise money.I suggegest ..............
I suggegest organizing the show to mise money
5/ I/think/energy-saving/buibs /should /use /save /electricity(make a complete sentence)
I think energy-saving bulbs should be used to savr eletricity.
6/ I/suggest/take/shower/instead/bath/save water
I suggest taking shower instead of usung the bath to save the water.