Rewrite each sentence so it begins as shown

Rewrite each sentence so it begins as shown.

1. You'll get wet, unless you take your umbrella.

=> If .

2. You won't get lost if you take a map.

=> Unless .

3. If it doesn't rain, we'll go for a walk.

=> We won't .

4. Supposing you had wings, what would you do?

=> What ? 

5. Imagine you lived on Mars. How would you feel?

=> How ?

6. Why don't you take the bus? That's what I'd do.

=> If .