according to our(),the books should now be returned to the library a.record b.recorded 填哪个there are many()classes and night classes a.train b.training 填哪个请解释

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according to our(),the books should now be returned to the library a.record b.recorded 填哪个
there are many()classes and night classes a.train b.training 填哪个请解释

a.record 作介词宾语,用名词
b.training 作定语,用形容词