1,Turning the following imperatives into the tag question form:

1,Turning the following imperatives into the tag question form:
Don't let the children stay up too late on weekends.
2,Turning the following imperatives into the tag question form:
Let's do it together.
3,Turning the following statement into a yes-no question:
I have already finished the assignment the teather gave us last week.
4,Turning the singular nouns or noun phrases into plural forms wherever possible with other necessary chances:
A traffic accident often occurs at a crossroads.
5,Using subjunctive mood :
A neighbour acted quickly and thus stopped the fire from spreading to the other floors.
6,Using a non-finite verb:
I don't think she would admit that she had sold the house.
7,Combining sentences using comparative degree(more than)
Susan is intelligent.Mary is not that intelligent.
8,Rewrite the following sentence using a disjunct"
It is natural that as a beginner he isn't a good driver yet.
9,Rewrite the following sentence as required:(Using "either you or I "as the subject)
We were responsible for the mistake.
10,Combining the sentences into one that contains a relative clause:
You sent my son an English-Chinese dictionary.Thank you very much.