---You could have walked here.---Yes. A taxi ___________ necessary.

It was reported that six  _____ including a boy.

Nowadays, a large number of women, especially those from the countryside,_________ in the clothing industry.

Physics ________ my favorite subject. I like it so much that I wish we had a physics class every day.

Large amounts of money _______ spent on the bridge, which ________ to be completed the next month.