Listening to loud music at rock concerts ____ caused hearing loss in some teenagers.
A．is B．are C．has D．have
---- What has made him look like lacking sleep?
----- _____ his wife is ill and he has to get up several times a night to attend to her.
A．For B．Because C．That D．What
If the way _____ you think of is not good enough, you can learn the way ______the top students deal with their study.
A．in which; / B．which; which
C．that; which D．/; /
By the time I got to the office, the meeting ______.
A．had begun B．began
C．was beginning D．would begin
_______ David says sounds right to Helen. That’s why she has made up her mind to live with him____ happens.
A．Whatever; whatever
B．No matter what; whatever
C．No matter what; No matter what
D．Whatever; however
_________ we have realized the danger of over-consumption, some measures should be adopted as soon as possible.
A．Now that B．As long as
C．In order that D．Even if
