A more formal style is appropriate for a composition for your teacher or for a letter to somebody you don’t know personally.
A more informal style is appropriate for an article to your school magazine or a letter to your friend.

2.I eat vegetables every day, but today I'm eating meat.

3.l play volleyball every day, but today I'm playing basketball.

4.I go windsurfing every day, but today I'm going skiing.

5.I play darts every day, but today I'm playing chess.

6.I read a book every day, but today I'm meeting friends.

Объяснение:

Present Simple (Простое Настоящее) используется для обозначения действия, которое зафиксировано в расписании автобусов, банков, поездов, магазинов и так далее.С ним могут употребляется слова always, every day, usually и тд

А время Present Continuous (Настоящее Длительное) – для описания запланированных на ближайшее время личных намерений, планов. Образуется при вс глагола to be в н. вр. (I am, he/she is, we/they are) и смыслового глагола в форме причастия настоящего времени (с окончанием ‑ing).

С ним могут употребляется слова now, at the moment, today.

20.I never get up before 7.30.

21.Are you sure this dress suits me?

22.Susan usually does her homework in her bedroom.

23.The Earth goes around the Sun.

24. They are having difficulties at the moment.

25.Samuel always does his homework before dinner but today he is helping his Mum.

26.This week we are going on a trip to London.

27.Mary  enjoys music and dancing.

28.We rarely see litter on the ground in London.

29.Alic is waiting for you in the living room.

30.The phone always rings when I take a bath.

31.John is writing an e-mail at the moment.

32. I detest rainy days!

33.David cuts his hair every month.

34.Litlle Betty is cutting her drawing right now.

Объяснение: