It was not until _______ that _______ to prepare his lessons.
| A．did his father come in; the boy began |
| B．his father came in; the boy began |
| C．did his father come in; did the boy begin |
| D．his father came in; did the boy begin |
推荐试卷
It was not until _______ that _______ to prepare his lessons.
| A．did his father come in; the boy began |
| B．his father came in; the boy began |
| C．did his father come in; did the boy begin |
| D．his father came in; did the boy begin |
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