Can you hear the____of the birds?It____very beautiful.A.sound,sound B.sounds,soundsC.sounds,sound D.sound,sounds

问题描述:

Can you hear the____of the birds?It____very beautiful.A.sound,sound B.sounds,sounds
C.sounds,sound D.sound,sounds

D
第一个sound是名词,不可数,第二个sound是动词,三单