3) С (аt). А все дальше правильно
Present Simple
b) Water ... at 100 degrees Celsius.
b) My little sister usually ... at 9 o'clock in the evening.
a) John ... very hard. He is a great specialist.
b) My brother ... in a big city.
b) I ... it is a brilliant idea.
Present Continuous.
a) Water ... . Can you turn the kettle off?
a) It is very late. I ... now.
b) You always ... . Can you do something else?
a) I ... with my cousin until I find my own accomodation.
a) What ... he ... about?
Lives, carries, washes,cries, goes, likes, watched
1) a
2) a
3) b
4) с
5) d
6) d
7) с
8) d
9) c
10) с
11) с
12) с
13)a
14) b
15) b
16) a
17) c
18)d
19) c
20)a