5.Who is the man standing over there?--- .

5.Who is the man standing over there?--- .
A.A.This is John Smith
B.B.John Smith is standing over there
C.C.John Smith,the new manager
D.D.Over there is John Smith standing
7.Don't lose heart!You should ____your courage and overcome the difficulty.
A.A.hold up
B.B.set up
C.C.pull up
D.D.pluck up
3.— Excuse me,when is the next flight from London due to arrive?— ______________
A.A.In half an hour.
B.B.An hour before.
C.C.Until the next one.
D.D.Before another one.
请说明原因，