Peter has many friends,______can help him .
__________ matters most in learning English is enough practice.
Choosing the right dictionary depends on __________ you want to use it for.
Having checked the doors were closed, and ___ all the lights were off, the boy opened the door to his bedroom.
It is none of your business __________ other people think about you. Believe yourself.
You can only be sure of __________ you have at present; you cannot be sure of something __________ you might get in the future.