Question

Вставьте гл. в нужной форме 1)I (go) to the sea every summer 2) She (clean) her room yesterday. 3) They (write) a test now . 4) We (buy) a new car next year

Answer 1

1) I go to the sea every summer (мы говорим, что каждое лето мы едем на море, т.е. это действие случается постоянно в одно и то же время, следовательно, мы ставим глагол в Present Simple)
2) She cleaned her room yesterday. (это действие произошло в прошлом, а если точнее вчера. Здесь мы ставим глагол в Past Simple)
3) They are writing a test now. (Мы имеем в виду, что это действие происходит прямо сейчас, так что мы ставим глагол в Present Continuous) 
4) We will buy a new car next year. (Мы говорим, что действие произойдет в будущем, т.е. в следущем году, так что мы прибавляем к глаголу will)

Надеюсь, я тебе помогла с:

Answer 2

1 I go
2 She cleaned
3 They are writting
4 We will buy

Answer 3

1) I go to the sea every summer. 2) She cleaned her room yesterday. 3) They are writing a test now. 4) We will buy a new car next year.

Answer:

1) The statement "I go to the sea every summer" indicates a regular activity that occurs during the summer. It suggests that the speaker visits the sea on a yearly basis.2) The statement "She cleaned her room yesterday" indicates a past action that occurred on the previous day. It suggests that the cleaning of the room took place in the past.3) The statement "They are writing a test now" indicates a current action that is happening at the present moment. It suggests that the individuals mentioned are currently engaged in the activity of writing a test.4) The statement "We will buy a new car next year" indicates a future action that is planned to take place in the upcoming year. It suggests that the purchase of a new car is scheduled for the future.