the [ ]children are singing english songs.the children are singing english songs[ ].the childrenare singinf english songs because of their[ ].《happy》

Question

the [ ]children are singing english songs.the children are singing english songs[ ].the children
are singinf english songs because of their[ ].《happy》

Answer 1

the [ happy]children are singing english songs.
the children are singing english songs[happily ].
the children are singing english songs because of their[ happiness].