Which of the following would NOT be paid from petty cash? A: Purchase of biscuits B: Gift for a departing staff member C: Purchase of an office photocopier D: Paying the window cleaner

The vacuum cleaner is a valuable labor-saving ______.

Which of the following is a household robot? A: A sweeper B: A surgery robot C: A robotic vacuum cleaner D: A robotic pool cleaner

Language belongs to each member of the society, to the cleaner ____ to the professor.

The ____ are cleaning the room. A: clean B: cleaners C: cleaner

Which of the following expresses ‘a person whose job is to<br/>clean windows’?() A: clean-window B: window-cleaner C: clean-windower D: window-cleaning

创建一个窗口frame的语句是( )。 A: window = new Window() B: window = Window() C: window = Frame() D: frame = wx.Frame(None)

Nothing was found but ___ broken. A: the room window B: the room’s window C: the room of the window D: the window of room

Do you mind my ______ A: open the window B: that open the window C: opening the window D: to open the window

Please go to ______ to pick up your ID card. A: third window B: the window three C: window third D: the third window