After chatting on QQ a long time, Mary looked up, ________ that it was 11:00 pm, long past her usual bedtime.
Her failure in the experiment suggested that she ______ the professor’s instructions.
The general spoke highly of such _____ as honesty, loyalty and bravery shown by the soldiers.
In order to complete the project ahead of time, the boss demanded that John __ extra hours.
When a new system _____, the old one is abolished.
His mother insisted that he _____ the money in the bank.