You can make a ______ by turning off the light after you leave the house.
Liu Yang became the first woman astronaut in China _____into space. ( )
-What's the matter? -The cook _____five minutes ago, and there are fifty dinners still to cook.( )
Most of us_________more than one thousand English words before we came to this school. ( )
Nankai University,_______ in 1919, has a history of more than 94 years. ( )
Our English teacher spoke very clearly ________we could hear every word. ( )