—Could I swim here, Mr. Yang?
—No, _____ . It’s dangerous to swim here.
| A．you couldn’t | B．I’m afraid you can’t |
| C．That’s all right | D．No problem |
—Could I swim here, Mr. Yang?
—No, _____ . It’s dangerous to swim here.
| A．you couldn’t | B．I’m afraid you can’t |
| C．That’s all right | D．No problem |
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