WELL
1. Jane has been having problems with her email so it's quite likely she hasn't got your message
Jane ........................ your message because she's been having email problems
HAVE
2. Letting Brittany walk home on her own was a mistake
You ........................ Brittany walk home on her own
BETTER
3. I strongly suggest that you don't forget your dictionary tomorrow
You ........................ your dictionary tomorrow
IT
4. I'm sure that the only thing that prevented me from leaving university was my dad's advice
I'm sure that ........................ I would have left university
FAIL
5. You have to put more effort in if you want to succeed
You ........................ you put more effort in
DUE
6. The start of the debate is scheduled for six
The debate ........................ at six