单项选择题
As a result of the （） switches, we are now faced with the following losses.
A.effective B.broke C.fault D.defective
单项选择题 part of your payment has been received, but $20,000 is still （）.
单项选择题 Please （） us your lowest price for 500 men’ s bicycles.
单项选择题 Are the goods （） Contract No. 1986 are now ready for shipment, please rush your L/C.
