Open the backets and put the verb in the correct form 1.if he (break) the window,he (pay) for a new one. 2.if it (not/be) cold , they (not/lit) the fire. 3.if a had free time now or tomorrow , i (send) the letter myself. 4.if i were you i (visit) the doctor. 5.if he (have) free time yesterday, he (do) the work himself.
2)isn't be cold,they will not lit
3) will send
4) will visit
5) has,will do