Complete the sentences with the correct forms of the verbs in brackets.
1. _____________________ (you / ever / to drive) a car?
2. While I _______________________(to wait), I saw Sandy.
3. We saw the new horror film last night but I _____________________ (to enjoy) it.
4. I ______________(to have) three different teachers since I started learning English.
5. They __________(to open) a big department store in the town centre next month.
6. How long ___________________________________ (you / to be) a doctor?
7. Alfie ______________________(to think) it's really good idea.