The teacher couldn't answer the pupil __________.(raise)Their mother_________ (rise) at down.

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The teacher couldn't answer the pupil __________.(raise)
Their mother_________ (rise) at down.

第一个已经有谓语转化为动名,加ing,第二个用过去时态,加d. rasiing rised

原型 raise rise

raising rises

原型 raise rise

raisy rose