If today (be) sunday,we(go)to the beach. They (make) fewer mistakes if they were more careful. Unless they (pass) their exam,they would join in the army. You (be) ill if you drink that water. If Tom (go) to bed earlier,he would not be sick. Had we known your address,we (write) your letter. If it rains heavily,we (not go) for a walk.
It would be impossible for me to finish my work if you (not finish) this chatter. If he (take)my advice,everything can go well. I would have come sooner if I (know)you were here. He never does his homework.If he (do) his homework,he (not worry)about his examination. It's too bad we lost the game.If you (play)for us,we(win). What you (do) if she refuses your invitation?