разобраться с заданием сегодня проходили,тему не поняла Тема: Gerund, нужно выбрать правильный вариант ответа.

Exercise should (1. be / being) a regular part of your day, like (2. brush / brushing) your teeth, eating,
and sleeping. It can be (3. work / working) hard in gym class, joining a sports team, or exercising on your
own. Keep our tips in mind:
(4. Find / finding) an activity that you think is fun. Many people find it's more fun to exercise with someone else, so see if you can find a friend or family
member to be active with you. Take it one step at a time. For example, (6. walk / walking) or (7. ride /riding) your bike to school or to a friend's house.
Use the stairs more often. In addition to exercise,
(8. make / making) just a few other changes in your life can help keep you healthy.

Either watch less TV or spend less time on (9. play / playing) computer games. (Use this time to exercise!) Eat 3-5 healthy meals a day, (10. drink /
drinking) enough water before, during, and after any exercise. Stop (11. drink / drinking) or drink fewer soft drinks.

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Exercise should (1) be (быть) a regular part of your day, like (2) brushing (чистка) your teeth, eating,  and sleeping. It can be (3) working (работа) hard in gym class, joining a sports team, or exercising on your  own. Keep our tips in mind:

(4) Find (найди) an activity that you think is fun. Many people find it's more fun to exercise with someone else, so see if you can find a friend or family  member to be active with you. Take it one step at a time. For example, (6) walk (ходи пешком) or (7) ride (езди на велике) your bike to school or to a friend's house.

Use the stairs more often. In addition to exercise,  (8) making (делая, хотя тут герундий играет роль подлежащего, как существительное) just a few other changes in your life can help keep you healthy.

Either watch less TV or spend less time on (9) playing (на игру) computer games. (Use this time to exercise!) Eat 3-5 healthy meals a day, (10) drink (пей) enough water before, during, and after any exercise. Stop (11) drinking (после глагола stop в значении "прекратить" всегда используется герундий) or drink fewer soft drinks.