_____ the three elements of productive forces, namely, the people, the means of production and the subject of labor, the people is that most critical.
— Turn off the TV, Jack. ____ your homework now?— Mum, just ten more minutes, please.
The thief ________ in from the kitchen window as the door was closed.
John, look at the time. ______ you play the piano at such a late hour ?
It is hard for me to imagine what I would be doing today if I _______ in love at the age of seven, with the Melinda Cox Library in my hometown.
— Are you still going to Shanghai for the Spring Festival?— Yes, but I really _____ because I have a lot of things to deal with.