Well...it might be that old "supply and demand" factor. As one example: a corporation/rancher/farmer might have the "demand" and the immigrant might have the "supply."
Answer:
1. It's likely to <em>rain </em>this afternoon.
2. I hope you will get used to <em>working</em> in this new condition soon.
3. It's high time they <em>submitted</em> their test papers.
4. My mother is busy <em>doing</em> the laundry.
5. In the event of fire, which way <em>would</em> we <em>take</em> to get out?
6. Jim was the first student
7. I spend an hour <em>practicing</em> <em>playing</em> the piano.
8. <em>Going </em>to Da Lat several times, I decided to travel to Son La.
9. There's no use <em>repairing</em> this laptop.
10. Jim as well as his siblings just <em>came</em> back from the UK.
Explanation:
I am not 100% sure about number 1 and 8 I would need more instructions but I hope that this helps. :D
