. The magician picked several persons from the audience and asked them to help him with the performance.
| A．by accident | B．on occasion |
| C．at random | D．on an average |
—Have you been wasting time chatting online recently?
—________. I've been studying hard and I need a break.
| A．Not really | B．Don't mention it |
| C．Not to worry | D．Never mind |
—I've got something weighing on my mind. Could you give me some advice?
—________. Tell me all about it and I'll do what I can.
| A．Don't mention it | B．No way |
| C．No problem | D．Forget it |
—Hello, Mrs James. Is Sally at home? I want to play badminton with her.
—________. She's gone for a walk across the fields.
| A．I'm sorry | B．Hold on |
| C．No problem | D．Forget it |
—Can you tell me Sam's telephone number?
—________. Who is Sam? The newcomer?
| A．I think so | B．That's OK |
| C．I'd rather not | D．I'm afraid not |
—Which room would you prefer to live in, sir?
—________. As long as it is clean and comfortable.
| A．I don't mind | B．I'm sure |
| C．No problem | D．Go ahead |