If we want to arrive at the village on time，we’d better __________.

To deal with the problem of water shortages，______ water-saving technology will be introduced to new industrial projects in Beijing and Shanghai.

Why did you go back to the classroom?- I left my friend Tom _______ there.[ ]

_______has recently been done to provide more buses for the people ,a shortage of public vehicles remains a serious problem .

You really need to go out and get some fresh air and sunshine．You ______ overworkedduring the last two weeks