The payment is made by an irrevocable（） letter of credit in our favor.

单项选择题（）youhavesaidisveryimportanttous.

A.What
B.That
C.Whose

单项选择题Ifthecasereachesthecriminallimit，thetaxpayermybeaccused（）criminalresponsibilities.

A.at
B.on
C.of

单项选择题Itdoesinthe（）oftransferofintangibleassetsorimmovableproperty.

A.circumstances
B.operation
C.case

单项选择题Accordingtolaw，taxableservicesrefertotransportation，（）finance，insuranceandthelike.

A.operation
B.construction
C.introduction

单项选择题Thatisthereason（）we’velostsomanycustomers.

A.why
B.that
C.which