It isn’t necessary to train so often. You ………………………….. train so often. HAVE

I’ve never heard such a loud shriek. It’s ………………………….. I’ve ever heard. THE

I didn't go to the party and now I'm sorry. HAD I ............................ to the party.

There’s a lot of work to do; we won’t finish until after ten o’clock. We ………………………….. by ten o’clock. HAVE 

It was possible for me to win the marathon. I ………………………….. the marathon. COULD

She started travelling on May 9th, 2009. On May 9th, 2010 she ………………………….. for a year. HAVE

I didn't get to my lesson on time because the bus was late. WOULD If the bus hadn't been late, I..............................my lesson on time.

It takes six hours to clean the house and Sara started cleaning at twelve. Sara ………………………….. the house by six o’clock. CLEANED

We survived because they found us quickly. IF ................................quickly, we wouldn't have survived.

It wasn't necessary for you to pay for my tickets for the game. DIDN'T You ......................... for my tickets for the game.

It was wrong to go skiing without goggles. We ………………………….. skiing without goggles. GONE

It's raining and I want it to stop. WISH I ......................... raining.

It was impossible for her to jump any higher. She ………………………….. any higher. HAVE