单项选择题
A.the best thing he could do was B.he did his best C.all he could do was D.his best thing was
Your firm has been recommended to us by AMK company, （）...
单项选择题Your firm has been recommended to us by AMK company, （） we have done business for many years.
A.with whom B.with who C.whom D.who
We find （）necessary to stress the importance of making ...
单项选择题We find （）necessary to stress the importance of making punctual shipment within the validity of the L/C.
A.how B.that C.it D.us
We regret （） that we can’t accept your offer.A.of sayin...
单项选择题We regret （） that we can’t accept your offer.
A.of saying B.for saying C.about saying D.to say
