Electrricity is our good servant as well as a ____oneA.dangerous B.careless c.helpful D.useful

Electrricity is our good servant as well as a ____oneA.dangerous B.careless c.helpful D.useful 请问Our play is our -Our doughter is our lives Jack is our monitor Our school is big______nice. our love is sacred this is our pen---------------- our name is where is our computer where is our school? Our english teacher is > Happiness is our God This is our final Here is our schooi IS our love Esport is our the word is our if our language is