Answer:

1)

(+) He is going to the supermarket

(-) He is not (isn't) going to the supermarket

(?) Is be going to the supermarket?

2)

(+) My mother is cooking dinner

(-) My mother is not (isn't) cooking dinner

(?) Is my mother cooking dinner?

3)

(+) They are coming

(-) They are not (aren't) coming

(?) Are they coming?

4)

(+) You are (You're) doing your homework

(-) You are not (aren't) doing your homework

(?) Are you doing your homework?

5)

(+) I am (I'm) trying to learn English

(-) I am (I'm) not trying to learn English

(?) Am I trying to learn English?

Present continuous tense :

(+) S + to be (am/is/are) + V1-ing

(-) S + to be (am not/is not (isn't)/are not (aren't)) + V1-ing

(?) To be (am/is/are) + S + V1-ing?

I = am

He/she/it = is

You/they/we = are

Maaf jika ada yang salah