It’s difficult for the village children to cross the river to get to school.— I think a bridge ________ over the river.

I’ll never forget the days _____ we spent on the small island.

Not knowing what version of iPad to choose, _____．

The car you bought is good _____ the colour. [ ]

Are you going to buy a camera? —–Yes. But there are so many kinds that I can’t decide __________ to buy.