Give the correct tense of the verbs in brackets using the first conditional

Exercise 5. Give the correct tense of the verbs in brackets using the first conditional.
1. If you (go) …. on a business trip, please inform me.
2. If he (eat) ….. another cake, he ( be ) …. sick.
3. I (tell) …… you more about the Ban Flower Festival if I ( meet ) …. you.
4. If I (be) …… allowed to choose a topic, I ( give ) …… a presentation on Bat Trang Village.
5. If I (not have) ….. to go to school this summer vacation, I ( travel ) …… to Mongolia to learn more about nomadic life.
6. What (you/do) ……….. if she refuses your invitation?
7. If the sun (shine) ……. , we ( walk ) …… into town.
8. Unless they (pass) ….. their examinations, they ( have ) …… to join the army.
9. You (have) ….. a stomachache if you drink that contaminated water.
10. If we (have) …… several days off, we ( learn ) …. how to cook some kinds of street food.