So involved with computers ____ that the leaders at the summer computer camps often had to force them to break for sports.
| A．has the children become | B．did the children become |
| C．has become the children | D．became the children |
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So involved with computers ____ that the leaders at the summer computer camps often had to force them to break for sports.
| A．has the children become | B．did the children become |
| C．has become the children | D．became the children |
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