—How long can we read in the library? —It ______ from 8 a.m. to 6p.m..
| A．opens | B．open | C．is open | D．opening |
—How long can we read in the library? —It ______ from 8 a.m. to 6p.m..
| A．opens | B．open | C．is open | D．opening |
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