—I’m waiting for the mail. Do you know it will arrive?
—Usually it comes by 4:00 p.m.
| A．how | B．where | C．when | D．what |
—I’m waiting for the mail. Do you know it will arrive?
—Usually it comes by 4:00 p.m.
| A．how | B．where | C．when | D．what |
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