It was_________ back home after the experiment

Mr Green made up his mind to devote all he could________his son to university.[ ]

Have you heard about that school bus accident?—Yes, fortunately all on board including the driver ________

It’s hot. Would you mind my _____the window—— _____.Do it as you like, please!

It’s great fun to go hiking in the valley, but ________ we shouldn’t turn a blind eye to the potential risks.