Use "unless": Children cannot enter if they are not accompanied by an adult.

Mixed: She doesn't have a mobile phone. That's why she couldn't be contacted yesterday.

1st conditional, use "provided": I will agree to go if my expenses are paid.

Mixed conditional, use "whether or not": She doesn't speak French. She didn't have a good time in Paris.

Create a conditional with "when": If the rain comes, it pours.

How would your life be different if you had been given a different name? (Answer using the 2nd conditional to talk about the present.)

Create a conditional by combining the two sentences using "as long as". You should put more paper in the printer. That way, you will not have any problems.

"Unless" or "provided": Don't take this plate ________ you are ready to eat.

When we ______ (heat) water, it always __________ (boil).

Mixed: He would have won the race if he _________ (be) a faster person. However, he's not fast.

"Whether or not" or "As long as": They will only invest in the project __________ everyone agrees.

Use "in case": Take an umbrella because it might rain.