1
A: Hey Stacey! Where are you going?
B: I am going to the supermarket. Mum can't go today because she is working until late.
A: That's a good idea. The fridge is almost empty.
2
A: What are you doing right now?
B: I am studying for the History test.
A: Do you want to take a break? We can have some tea and then you can continue.
B: OK! That sounds good.
3
A: What are you cooking, Mum?
B: I am trying a new recipe. It's an Italian dish.
A: Well, it smells delicious. I can't wait to taste it!
4
A: I am going to the shops now. Can you join me?
B: I want to come but I can't. I need to study for my exams.
A: No problem. I understand.
--------
HTĐ
(+): S + V1/Vs-es + O
(-): S + don't/doesn't + V1
(?): Do/Does + S + V1?
DHNB: always, usually, often, seldom, never, rarely, every (day/month/week/year), ...
HTTD
(+): S + am/is/are + V_ing
(-): S + am not/isn't/aren't + V_ing
(?): Am/Is/Are + S + V_ing?
DHNB: at the moment, at the present, at this time, now, Look!, Listen!, ...
@Ka