单项选择题
A.While appreciating
B.As appreciating
C.When appreciate
D.Because we appreciate
单项选择题 The performance of the contracted product should be （） the technical specifications stipulated in the contract.
单项选择题 We should appreciate it if you would quote your best prices C.I.F. New York for the envelope openers （） in China Daily.
单项选择题 Salaries for temporary positions seem to be higher than （）.