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

1 A: (are you doing) anything interesting this weekend?

B: No, I (am studying) for my Biology exam.

2 A: Why (ae you) in such a rush?

B: Because (my train leaves) in ten minutes.

3 A: What (dos James do)?

B: (He works) at the Natural History Museum in the city centre.

4 A: (Do you like) your flat?

B: Not really. Actually, I (am looking) for a new one at the moment.

5 A: Nina (looks) nervous.

B: She is. She (is seeing) the dentist this afternoon.

6 A: (Does he want) to go to the theatre this evening?

B: He can't. He (is having) an important business appointment.

7 A: Why (does not Anna come) to work these days? Is she ill?

B: No, she's on leave. She (is getting) married next week.

8 A: How much (does the brain weigh)?

B: About 2% of your total body weight, and (it uses) 20% of your body's energy.