had taken such effective measures much earlier,the river ________ so seriously now.

I must you that my patience is almost at an end .

Take care! Accidents _________ happen along this part of the road.

May I go and play with Dick this afternoon,Mum— No, you can’t go out _____ your work is beingdone.

ving standard of the people in China, _______ is shown in the report, has improved over the past decades.