electricity is very useful and we should--------(use) it pro

the internet is very useful.we can use it( )english ----------the robot is very useful to us,we should treat it English is _________ useful language. We should learn it wel Electricity is very useful in our life.（感叹句） we find it is very useful to study english well 英语填空The electricity blii is very expensive.We should try to 英语翻译Computers are very useful and the use of computers is gr What is the cloth useful——?---We can use it ——the dirty floo we should try to s()water and electricity 1:We should try to s______ water and electricity. The dictionary is a little expensive ,and it is very useful. it is very d_____andhot.We should drink more water