Exercise 3. 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 I 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.
Exercise 4. Underline the best answers.
1. If / Unless you don’t study hard, you won’t pass the final exam.
2. Unless she returns / doesn’t return my comic books to me, I will never lend her again.
3. They will lose their jobs if they don’t work / work hard.
4. Unless / If you eat enough vegetables and fruit, you will have health problems.
5. If Lucia doesn’t change her studying habit, she will / won’t be able to improve her performance at school.
6. We can’t find the way out unless we look / don’t look at the map.
7. Anna won’t finish her work unless / if they help her.
8. I won’t go out tonight if my parents don’t allow / allow me to.
9. Unless you practice speaking English, you can’t / will communicate with foreigners.
10. If Jack isn’t / is sick, he will go skiing with us.
Exercise 5. Fili in the blanks with an appropriate preposition.
1. The tribal women can weave threads ___________ beautiful clothes.
2. That gallery has an incredible collection ___________ native art.
3. I will ask my brother to help me ___________ my Maths homework.
4. Which country is famous ___________ kimchi? - It’s Korea.
5. Does curry come ___________ India?
6. Traditional classes help students interact ___________ their teachers and friends.
7. Is this food eaten ___________ special occasions?
8. Alaska is known ___________ the dogsled.
9. Mushers come to Anchorage every March to compete ___________ cash and prizes.
10. Curry is served ___________ rice or bread.