Such a problem is____difficult for a primary school student ___.
| A.so; to work | B.very too; to work out |
| C.rather too; to work out | D.quite too; to answer |
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Such a problem is____difficult for a primary school student ___.
| A.so; to work | B.very too; to work out |
| C.rather too; to work out | D.quite too; to answer |
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