Ответ:

2.She will be very dissapointed if you do not come.

3.You will catch a cold if you go for a walk in this weather.

4.My english teacher will be mad if she does not get it tomorrow.

5.If the weaher is nice, I will show you the Old Town.

Объяснение:

First Conditional - возможная ситуация в будущем, предсказываем результат.

If + Present Simple + will