Put the verbs in the bracket into the correct tense: If you want to lose weight, You (should do) ... exercise

​III. Put the verbs in the bracket into the correct tense.
1. If you want to lose weight, You (should do)...............................exercise.
2. If he doesn’t come soon, he (might/ miss) ..........................................the train.
3. If you want to get well, you (ought to/ go).................................. to bed.
4. You (must/ do) ......................................your homework if you want to watch TV.