bob sings well .he can---in our school music festival

bob sings well .he can---in our school music festival Mike can ( ) ( ) in our school music festival the boy is 空 our school music festival ,because he sings wel You can be in our school music festival的be You can be in our school music festival什么意思? Then we can _____ in our school music festival. John sings well in our school The boy is_____our school music festival,because he sings we Tom does well in singing .He sings p___ well in our school. 1.Anyone who sings well can part in the() in our school.是填ac then you can be in our school music festival .中为什么要加be? then you can in our school music festival.这句话哪错了