Put the verbs in brackets into the present continuous or the present simple

Давайте разберем каждый диалог и определим правильную форму глагола:

1. A: Hi Olga. Are you (be) there?
   B: Sorry, but I am sleeping (sleep) now.

2. A: What are you doing (you/do)?
   B: I am talking (talk) to Fred.

3. A: Do you like (you/like) this dress?
   B: Yes, a lot. How much does it cost (it/cost)?

4. A: How often do you clean (you/clean) your room?
   B: Once a week.

5. A: Lisa is studying (study) hard these days.
   B: I know. She wants (want) to pass her exams.

6. A: You look (look) terrible. What's wrong?
   B: I have (have) a terrible headache.

Пояснения:
- Present Continuous используется для действий, происходящих в момент речи (1, 2) или временных действий в настоящем (5)
- Present Simple используется для:
* Регулярных действий (4)
* Фактов и предпочтений (3)
* Состояний и чувств (6)
* Глаголов состояния (like, want, have)