• Yes, and I have been using one for more than a year.
• Yes, and I started in the last year.
• Yes, beginning in the last two months.
• Yes, starting in the last month.
• Yes, in the last two weeks.
• Yes, and I just started in the last week.
• I used to use one, but I stopped.
• No, I haven't used one.
• No, but I would if I could.
• No, I didn't know about it.

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