A.The space shuttle would be under close inspection.
B.One of the crew members failed to head home.
C.Unexpected weather delayed the landing of Endeavor.
D.The space shuttle made a smooth landing.

A.St.Petersburg.
B.Petrograd.
C.Leningrad.
D.Vasilievsky.
A.It is nearly surrounded by water.
B.It has four islands.
C.It is famous for its ship industry.
D.It is a big island.
A.the Winter Palace.
B.St.Isaac’S Cathedral.
C.Kazall Cathedral.
D.Petrodvorets Palace.