On the whole, frequently ______ in a wide variety of activities and older adults are less likely to feel depressed.
A.participate B.to participate C.participating D.participated
The manager has ______ several principles that he hopes will guide his employees in their work.
A.set in B.set off C.set out D.set aside
He pointed out such a crucial detail about the experiment ______ we could never neglect.
A.as B.that C.where D.when
Coming on as a ______ for a regular player, Jones scored four crucial goals for his team.
A.symbol B.sacrifice C.superior D.substitute
______ as chairman of Alibaba, Jack Ma is helping build a credit system for small businesses.
A.To resign B.Resigned C.Resigning D.Having resigned
Love will always be a topic of ______ interest regardless of race, religion or nationality.
A.spiritual B.universal C.fundamental D.conventional
