摘要： When he joined them in the work, he was disappointed at there so little to do. A. being B. were C. having D. had
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When he joined them in the work, he was disappointed at there _______ so little to do.
| A．being | B．were | C．having | D．had |
When he joined them in the work, he was disappointed at there _______ so little to do.
A．being B．were C．having D．had
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