-__________ has Line 22 (From Jinshanwei Station to Shanghai South Railway Station) been open to traffic?
I look around , but I couldn,t see _____.
Mary wants to know _____ he can go shopping with her tomorrow.
The man tells us that the best time _____ Beijing is in autumn.
____tall trees they are!
The old man _____ under a big tree is holding a _____ pole in his hand.