单项选择题The manager needs an assistant who he can ______ to take care of problems in his absence.
单项选择题The stock ______ in value should be sold.
单项选择题______, I wrote a letter to Henry Ford Ⅱ and told him what happened.
单项选择题He was a person who would stand up for what he thought right, ______.
单项选择题You can't be ______ careful in making the decision as it was such a critical case.