4. Complete the sentenses with the correct forms of the verbs in brackets.

1. We recently decided ___ (launch) a nwe space probe.
2. They've promised ___ (increase) students knowledge of physics.
3. She says we've met before, but I can't remember ___ (meet) her.
4. You need to stop __ (do) crossword puzzles all the time and get out more.
5. I'm afraid she's refused ___ (allow) you to do aerial photography over her house.