题文
---____ do you study for a math test? ---I study math ____ lots of exercises.
| A.What, by doing | B.How, by doing | C.How, doing | D.What, doing |
---____ do you study for a math test? ---I study math ____ lots of exercises.
| A.What, by doing | B.How, by doing | C.How, doing | D.What, doing |
试题篮
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