—What’s your plan for the coming summer holiday?
—I’ll devote as much time as I can ________ some voluntary work.
| A．to do | B．doing |
| C．do | D．to doing |
—What’s your plan for the coming summer holiday?
—I’ll devote as much time as I can ________ some voluntary work.
| A．to do | B．doing |
| C．do | D．to doing |
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