He is not old enough, but he _____ sent to join the army.
| A.insisted being |
| B.insisted to be |
| C.insisted on being |
| D.insisted on to be |
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He is not old enough, but he _____ sent to join the army.
| A.insisted being |
| B.insisted to be |
| C.insisted on being |
| D.insisted on to be |
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