---Mum, when shall we go to the zoo?---Sorry, I will have a meeting today. ________ Saturday ________ Sunday is OK.
Friends are those _____ always stand by your side when you need help.
I _______ be afraid to sleep alone in my room, but now I _______ sleeping there alone.
He _____ for two years. We are still sad about his ______.
I _______ to Beihai Park if I _______ time next weekend.
–Are you going to Shanghai by bus? --I am not sure. It’s cheap, but uncomfortable. I _____ take a train.