quEstions 17 to 20 ArE BAsED on thE Following ConvErsAtion Among A trAvEl AgEnt AnD two CustomErs. you now hAvE 20 sEConDs to rEAD quEstions 17 to 20.

whEn will Both CustomErs BE FrEE to trAvElA．thE First wEEk oF july.
B．From thE sEvEnth to thE twEnty-thirD oF july.
C．From thE First to thE twEnty-thirD oF july.
D．thE wholE month ExCEpt For thE lAst FivE DAys.