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

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

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