1. I may/ might go out later with my friends, but I'm not sure.
2. There's a lot of traffic today so the bus could/ might/ may arrive late.
3. Students mustn't talk during the written exam.
4. Paula plays the piano and she can sing quite well, too. correct
5. You must wear a uniform when you're in the army.
6. Children shouldn't eat too much ice cream.
7. There may not be time to go to the shops because they close soon. correct
8. Yes, you can go out tonight but you must be home no later than 11 pm.
9. I'm on holiday now so I don't have to get up early. It's great!
10. I haven't got my watch on, but I think it might be about 6.30 now.
Объяснение:
The entire European railway network (bring) will have been brought to a new era of success by the end of the year 2010.
If the weather had been nice the day before, we (go) would have gone sailing.
I must get used to (speak) being spoken to in English.
They (not speak) have not spoken to each other since they quarrelled last Monday.
When I found my wallet, I discovered the credit cards (steal) had been stolen.
He said that by 2100 the earth's supplies of oil, coal and gas (run out) will have run out / would have run out.
I dislike (tell) being told what to do.
She (buy) had bought / bought the new computer before she received permission from her supervisor, which made him very angry.
Rebecca (give) was given / had been given her new assignment before she left for South America.
Unemployment (rise) has risen / has been rising steadily over the last ten years.
Объяснение: