—Listen! Is Mary singing in the next room?—No. It _______ be Mary．She has gone to Shanghai for an important meeting.

I talked for a long time, and in the end I_____ make her believe me. 

We ________the difficulty together, but why didn’t you tell me?

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

Cars, buses and bikes ________ stop when the traffic lights turn red.