—I have watered all the plants in the garden.
—Thanks, Tony, but you _____ then. It’s reported that there will be a storm tonight.
A.couldn’t have watered B.needn’t have watered
C.could water D.needn’t water
_____ the ups and downs in my life, I eventually realized what life was all about.
A.Experienced B.Having experienced
C.To experience D.Experiencing
He was faced with the severe financial _____ of caring for his wife and five children.
A.status B.burden C.target D.absence
In China, Chinese chess and table tennis are very popular among teenagers, many of _____ have been playing them since they were very young.
A.who B.them C.theirs D.whom
We tend to have a better memory for things that excite our senses or _____our emotions than for straight facts.
A.find out B.appeal to C.put down D.come across
_____ teens are using the Internet for both social and intellectual development, they are also facing significant challenges on how to manage their relationships online.
A.Unless B.While C.Once D.Until
