I,

1, Unless you are careful, you will cut yourself with that knife.

2, Unless you like this one, I will bring you another.

3, Unless you rest, you will really be ill.

4, Unless you water these plants every day, they will die. 

5, Unless you promise to try harder, I won't help you.

6, Unless you work harder, you will fall in the test.

7, If Joe doesn't change his way, he will end up in prison.

8, If it doesn't rain tomorrow, we will go fishing.

9, If it isn't rainy, we will have lunch outdoors.

10, Is you don't stop smoking, you will die soon.

II,

1, If you stay up too late, you will be tired the next day.

2, If you waste water, you will have to pay a large sum of money.

3, If you use electricity to catch fish, you will be fined heavily.

4,  If you eat too much in the evening, you will get fat.

5, If we recycle, we'll save the natural resources. 

`~rai~`

$\begin{array}{I}I.\\\text{1.Unless you are careful,you will cut yourself with that knife.}\\\text{2.Unless you like this one,I'll bring you another.}\\\text{3.Unless you rest,you will really be ill.}\\\text{4.Unless you water these trees every day,they will die.}\\\text{5.Unless you promise to try harder,I won't help you.}\\\text{6.Unless you work harder,you'll fail in the test.}\\\text{7.If Joe doesn't change his ways,he will end up in prison.}\\\text{8.If it doesn't rain tomorrow,we'll go fishing.}\\\text{9.If it isnn't rainy,we will have lunch outdoors.}\\\text{10.If you don't stop smoking,you will die soon.}\\II.\\\text{1.If you stay up too late,you'll be tired the next day.}\\\text{2.If you waste water,you will have to pay a large sum of money.}\\\text{3.If you use electricity to catch fish,you will be fined heavily.}\\\text{4.If you eat too much in the evening,you will get fat.}\\\text{5.If we recycle,we will save natural resources.}\end{array}$