All international orders are ______ via Global Express Mail within five to ten business days.

单项选择题Of the 9500 drivers () since the beginning of the year, 23% were found () in road knowledge.

A. tested lacking
B. having been tested to lack
C. tested lacked
D. to have been tested lack

单项选择题That she hadn't kept her ______ on her work resulted in the failure.