Complete these conditional sentences using the correct form of the verb in brackets: 1) If I ..... (know) the answer to your question, I ..... (tell) you. 2) When petrol ..... (ignite), it ..... (go up) in flames. 3) I ..... (gain) lots of experience if I ..... (volunteer) for this project - but I didn't apply. 4) ..... (let) me know if you ..... (like) me to cook dinner tonight. 5) If visibility ..... (not/be) poor last night, the flight ..... (leave) on time.
1. knew, would tell
2. ignites, goes up
3. would have gained, had volunteered
4. let, would like
5. hadn't been, would have left