So2 + hno3 = h2so4 + no2 тут so2 восстановитель или окислитель ?

SO2 - это Восстановитель

1) was

2) go

3) teachs

4) skated

5) worked

6) drives

7) buys

8) feed

9) flew

10) could

11) spoke

12) sends

13) saw

14) falls

15) met

16) don't usualy like

17) didn't arrive

18) didn't walk

19) don't watch

20) doesn't swim

21) didn't live

22) didn't listen

23) don't make

24) doesn't phone

25) didn't hear

26) didn't bring

27) doesn't put

28) don't feed

29) Do you correct

30) Does he play

31) Did they come

32) Does Kate help

33) Did you go

34) do you know

35) did Mary live

36) do they usually late

37) do you often do

38) did she forget

39) found

40) speak

Exercise 1:

1) He helped his mother yesterday.

2) My mother bought milk last week.

3) I could swim very well last week.

4) She played basketball two days ago.

5) We washed our hands three hours ago.

Exercise 2:

1) I didn't drink juice yesterday.

2) My friend didn't watch TV last week.

3) She didn't grow flowers last year.

4) The children didn't clean their teeth yesterday.

5) He didn't give me his toys.

6) They didn't jump very well yesterday

Объяснение:

Past Simple:

Положительное:

S+V+ed (или же неправильный глагол в времени; кратко: V²)

Отрицательное:

S+didn't+V (V¹; начальная форма)

Вопросительное:

Did+S+V (V¹)

В Exercise 1 последнем предложении можете заменить two hours ago в yesterday если понадобится.