Over the years, people have learned from ants that teamwork and perseverance are indeed two key ______ to success.
| A．certificates | B．ingredients |
| C．approaches | D．instructions |
The writer conveyed a positive attitude through his works.______, his readers are motivated and are themselves becoming a source of motivation for others.
| A．On the whole | B．In the meanwhile |
| C．In the way | D．On the contrary |
You are to meet with frustration in the pursuit of success and through greater effort and hard work your dream will definitely come true. Put it ______ , “No pains, no gains.”
| A．frequently | B．firmly |
| C．openly | D．simply |
The electronic red-packet has been so ______ that AliPay and Tencent Wechat compete against each other openly and secretly since the beginning of this year.
| A．popular | B．convenient |
| C．favorable | D．arbitrary |
The Spring Festival is the most joyful time of the year, but it can also be ______ . With all the traveling, visiting relatives, and gift-buying, the holiday can become a tense time for many families.
| A．beneficial | B．optional |
| C．commercial | D．stressful |