2010年城镇居民人均食品支出4805元,比2005年增长64.9%,食收比(食收比=食品开支÷总收入)从2005年的36.7%下降至2010年的35.7%,食收比的下降标志着
______ many times, my elderly mother still can’t remember how to light the gas.
---The window is dirty. ---I know. It ______ for ages and I’m considering giving the task to our children.
As a young minister, he was full of ______ ideas for social reform.
I’m glad to hear a new school building has been put up ______ once lay an abandoned cinema.
The lazy boy is indeed unusual: he knows nothing, ______ does he seek to know.