When I reach the school grounds there are lots of “good mornings” _____me _____the boys, many _____whom have walked a long way, sometimes up _____two hours, to get to the school[ ]

In aerospace devices the weight of thenecessary power producing equipment is _____.

Though the professor tried his best to explain the difficult question, the students still looked _____.

I’m so ______ to all those volunteers because they helped my terrible day end happily.

Do you have ________ to tell me —No, nothing.