С! use present simple and present progressive.make these sentences negative and interrogative. 1)at the moment/i/to sit/on the chair 2)he/always/to practice english grammar 3)leaves/to fall/from trees/now 4)in the evenings/my father/to watch tv 5)sometimes/ it /to rain/in summer 6)it's five o'clock /and/she/to have/ tea/with her friends 7)now/i/to understand/him 8)our students/to do/different exercises/every day 9)they/to travel/somewhere/in europe/now 10)their mates/to study/english/hard

1)At the moment/I/to sit/on the chair
I am not sitting on the chair at the moment.
Am I sitting on the chair at the moment?

2)He/always/to practice English grammar
He does not always practice English grammar.
Does he always practice English grammar?

3)Leaves/to fall/from trees/now
Leaves are not falling from trees now.
Are leaves falling from trees now?

4)In the evenings/my father/to watch TV
My father does not watch TV in the evenings.
Does my father watch TV in the evenings?

5) Sometimes/ it /to rain/in summer
Sometimes it does not rain in summer.
Does it rain sometimes in summer?

6) It’s five o'clock /and/she/to have/ tea/with her friends
It`s five o`clock and she is not having tea with her friends.
Is she not having tea with her friends at five o’clock?

7)Now/I/to understand/him
I do not understand him now.
Do I understand him now?

8)Our students/to do/different exercises/every day
Our students do not do different exercises every day.
Do our students do different exercises every day?

9)They/to travel/somewhere/in Europe/now
They are not traveling anywhere in Europe now.
Are they traveling anywhere in Europe now?

10)Their mates/to study/English/hard
Their mates don`t study English hard.
Do their mates study English hard?