Ответ:

Объяснение:

1) Yesterday she helped her mother. She mopped the floor, dried the cups and laid the table

2) - Why can`t she answer the phone?

   - She is mopping the floor

3) Johennas Keyler explained that all the planets revolve around the Sun and that the Sun remain in one position

4) In Russia children go to school at the age of seven

5) I don`t think he will be on time tomorrow unless he go by train

6) I wonder if he go by train tomorrow

7) She droppped her favourite cup while she was drying the cups

8) It was happen long ago

9) The card was sent two days ago

10) Who often send cards? - They do

11) Will ther card send tomorrow?

12) He said he has already sent the card

13) I`m tired. I have been preparing since breakfast

14) If he send the card today, they will send if on Friday

15) Alexander Pushkin recieved his early education at home

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