1. f you send this letter now, she will receive it tomorrow. 
2. If I do this test, I will improve my English. 
3. If I find your ring, I will give it back to you. 
4. Peggy will go shopping if she has time in the afternoon. 
5. Simon will go to London next week if he gets a cheap flight. 
6. If her boyfriend does not phone today, she will leave him. 
7. If they do not study harder, they will not pass the exam. 
8. If it rains tomorrow, I will not have to water the plants. 
9. You will not be able to sleep if you watch this scary film. 
10. Susan cannot move into the new house if it is not ready on time.

    11. If I study, I will pass the exams.

    12. If the sun shines, we will walk to the town.

    13. If he has a temperature, he will see the doctor.

    14. If my friends come, I will be very happy.

    15. If she earns a lot of money, she will fly to New York.

    16. If we travel to London, we will visit the museums.

    17. If you wear sandals in the mountains, you will slip on the rocks.

    18. If Rita forgets her homework, the teacher will give her a low mark.

    19. If they go to the disco, they can listen to loud music.

    20. If you wait a minute, I will ask my parents.

Đề bài: Chia động từ trong ngoặc theo điều kiện loại 1
1, If you (send)....send........this letter now , she (receive).........will receive .........is tomorrow.
2,If I (do)......do.............this test, I (improve).....will improve.......my English.
3, If I (find).......find........ your ring, I (give).......will give......it back to you.
4, Peggy (go).......will go....... shopping is she (have) ...has....time in the afternoon.
5, Simon (go)........will go......to LonDon next week is he ( get ).........get.......a cheap flight.
6, If her boyfriend ( phone/not ).........doesn't phone..... today , she ( leave )........will leave........him.
7,If they (study/hot).......don't study........harder, they ( pass/ not)......won't pass.....the exam.
8,If it (rain)......rains........tomorow, I (have to,not).......won't have to... water playts.
9,You ( be able/not).........won't be able.......to sleep if you (wath).....watch.......this scary film.
10, Susan ( can,move,hot)..........can't move.........into the new house if it ( be/not )......isn't........ready on time.
11, If I (study)......study.....I ....could....pass the exams.
12, If she sun (shine)..........shines....,we (walk)...will walk........into town.
13, If he (have)….has.....a temperature , he (see)......will see....the doctor.
14, If my friends (come).......come......,I (be)... .will be......very happy.
15, If she (earn)....earns........a lot of money,she (fly)....will fly.....to New York.
16, If we (travel)........travel....to LonDon , we (visit)...will visit......the museums.
17, If you ( wear ).........wear..... sandals in the mountains , you ( ship ).....will ship........on the rocks.
18, If Rita (forget)......forgets......her homework, the teacher (give)......will give.......her low mark.
19, If they (go)......go.....to the disco , they (listen)...will listen....to loud music.
20, If you (wait)......wait........a minute, I (ask)......will ask...my parents