—Would you mind my opening the window to let some fresh air in?
—Not in the least. ________.
A．Come on B．Take care
C．Go ahead D．Hold on
December 17, 2011 was a sad day for the North Koreans, ______ their top leader Kim Jung-ill passed away unexpectedly.
A．when B．that C．which D．who
—You seem familiar with Mr. John?
—Sure, we ______ together for three years in the 1990s.
A．have worked B．had worked
C．are working D．worked
Most students think this book is useful as it _______ all the basic grammar rules they need to know.
A．deals B．covers C．says D．teaches
—Mr. Smith, would you have some more ice-cream?
—No, thanks. It’s very good, but I have to ______ my weight, you know.
A．watch B．remain C．pull D．gain
Because they hadn’t booked a room in advance, there were______ left when they arrived at the hotel.
A．none B．no one C．nobody D．nothing
