THAT
1. The whole truth didn't come out until after Obama's resignation.
It ........................ the whole truth came out.
HEAR
2. We weren't at all surprised when we heard that Peter had been dismissed.
It came ........................ Peter's dismissal.
UNDERGONE
3. The castle had been extensively restored and looked as good as new.
The castle ........................ and looked as good as new.
POPULAR
4. Many people believe that all plants are green, but they're wrong.
Contrary ........................ plants are green.
HAD
5. Things went wrong at once after his resignation.
Hardly ........................ things went wrong.
HOW
6. In spite of all my efforts, I couldn't persuade Joe to come to the pub.
No matter ........................ Joe into coming to the pub.