.
“Meals on wheels” is a free service, ____ hot meals are delivered to elderly people who may not be able to move around very easily.
| A．that | B．which | C．where | D．what |
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.
“Meals on wheels” is a free service, ____ hot meals are delivered to elderly people who may not be able to move around very easily.
| A．that | B．which | C．where | D．what |
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