---- May I smoke here?---- If you      , choose a seat in the smoking section

(2013·青岛二模)John ________ yet, or he would have telephoned me.

 Thanks to his pension, Li Zhentian, _____ give each of his grandchildren RMB 5 as a Chinese New year gift for the first time.

—Some countries are taking action to occupy the islands of the South China Sea.—Yes, but I think they ____be punished sooner or later.

 — How’s your tour around the North Lake? Is it beautiful?— It ______ be, but it is now heavily polluted.