_____ March 28, about 20 Chinese cities turned off lights of major building for one hour. [ ]

Jack, your father has gone out without this umbrella!—Well, take it easy. _________ he comes back for it.

Her math book is _____ the sofa.

Who is the student on the playground?? —- Andy. _____ often takes a walk with ______.

In China, people walk_____ the street. [ ]