Правильно раскройте скобки. he (be) late for school if he (not\get up) soon. if you (not\ride) your bicycle more carefully, you (have) accident. if we (run), we (not\miss) the train.

He wiil be late for school if he  doesn't get up soon.If you don't ride your bicycle more carefully, you'll have an accident.If we run, we won't miss the train.