If not...Unless exercises

1. We cannot go sailing ______ the rain stops.

• if

• unless

2. I won't talk to her _____ she apologizes to me.

• if

• unless

3. You won't be able to find the house ______ you get help from your GPS.

• if

• unless

4. I won't go _____ he is going.

• if

• unless

5) ______ we don’t take the necessary measures now, we may have serious problems later.

• If

• Unless

6) ______ you don't take notes you will have hard time studying later.

• If

• Not

7. She must have graduated already, ____ she failed a class.

• if

• unless

8. Jason is always cheerful ____ something really bad happens.

• if

• unless

9) You are not allowed into the casino ______ you are under 21 years old.

• if

• unless

10) _____ they behave, those children are not welcome here.

• If

• Unless