---________do you spend _English learning every day? ---For about an hour.
| A．How long, in | B．How many times, on | C．How often, on | D．How long, on |
---________do you spend _English learning every day? ---For about an hour.
| A．How long, in | B．How many times, on | C．How often, on | D．How long, on |
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