Ex. 5 помогите ОЧЕНЬ СРОЧНО !!!! Да 50 баллов

1) He will do english exercises, if he hasnt another business.
2) If I do not help him, he wont be able to do a test tomorrow.
3) He will not go to the library this evening.
4) If he isnt going to the library, he will be at home.
5) We will be at home tomorrow.
6) If we are at home tomorrow, we will watch this TV-programm.
7) She wont be at home tomorrow.
8) If she wont be at home tomorrow, leave her a message.
9) The weather tomorrow will be nice.
10) If the weather tomorrow is nice, we will go to the country. 
11) When she comes to the school she takes off her coat.
12) When she comes to the school she will take off her coat.
13) When he remebers that funny scene he is going to laugh.
14) When he remembers that funny scene he will start to laugh.
15)When i come home i will call you.
16) She calls us this evening.
17) If she calls you, ask her to bring me the book.
18) I meet Tom tomorrow.
19) When I meet Tom i will tell him about it.
20) Before I go to Paris I will call you.