I.
2. If you see a magpie in the morning, you'll get good news that day
3. If a man smiles a lot during his wedding, his first child will be a girl
4. If you see a spider in your house, you'll have visitors
5. If you wash your hair on the morning of an exam, you won't remember what you have learned
6. If you eat lentils on 1st January, youll make a lot of money during the year
II
2. will help you... want
3. don't hurry...will miss
4. won't mind... don't phone
5. have.. will help
6.will make... are
III
2. rains
3. don't turn round
4. won't be able
5. lie down
6. will open
IV
2. he will sit in his dinner
3. it will turn into a prince
4. he will bump his head
5. she will get a surprise
6. she will squash the cat 

$\large \textbf{1}$

 2. If you see a magpie in the morning, you'll have visitors.

 3. If a man smiles a lot during his wedding, his first child will be a girl.

 4. If you see a spider in your house, you'll get good news that day.

 5. If you wash your hair on the morning of an exam, you won't remember what you've learned.

 6. If you eat lentils on 1st January, you'll make a lot of money during the year.

$\large \textbf{2}$

 2. will help - want

 3. don't hurry - will miss

 4. won't mind - don't phone

 5. have - will help

 6. will make - are

$\large \textbf{3}$

 2. rains

 3. don't turn round

 4. won't be able

 5. lie down

 6. will open

$\large \textbf{4}$

 2. ..., he will sit in his dinner.

 3. ..., it will turn into a prince

 4. ..., he will bump his head

 5. ..., she will get a surprise

 6. ..., he will squash the cat