It is easy to set the goal of our production for next year, butto achieve it takes a lot of trouble[ ]

Excuse me, sir. You ________ open the door before the car stops.

As there is less and less coal and oil, scientists areexploring new ways of making use of______________energy, such as sunlight, wind and water for power and fuel.A．abrupt B．alternative C．authentic D．abstract B【解析】试题分析：考查形容词：

Here __________ some pencils on the table .

Our government is doing _______ to protect theenvironment.—That’s great.