The water cycle

Put the verbs in parentheses into the correct tense

- When it   rains  (rain, the water   runs  (run)off the ground info lakes and rivers.

- When water droplets in clouds   gets  (get) too heavy, it   rains  (rain).

- When vapor   rises  (rise) into the air, it    forms  (form) clouds.

- When the sun   heats   (heat) the water in the ocean, there  is  (be) vapor.

- When the sun  is  (be) out, it   heat    the water in the oceans.