下面的短文有15处空白，请根据短文内容为每处空白确定l个最佳选项。
A Powerful Influence
There can be no doubt at all that the Internet has made a huge difference to our lives. Parents are worried that children spend too much time playing on the Internet, hardly __________(51) doing anything else in their spare time. Naturally, parents are__________(52) to find out why the Internet is so attractive, and they want to know if it can be __________(53) for their children. Should parents worry if their children are spending that much time__________(54)their computers？
Obviously, if children are bent over their computers for hours, absorbed__________(55 ) some game, instead of doing their homework, then something is wrong. Parents and children could decide how much use the child should __________ (56) use of the Internet, and the child should give his or her__________(57) that it won&39;t interfere with homework. If the child is not__________(58 ) to this arrangement, the parent can take more drastic__________(59) dealing with a child&39;s use of the Internet is not much different from__________ (60) any other soft of bargain about behaviour.
Any parent who is__________(61)alarmed about a child&39;s behaviour should make an appointment to__________(62) the matter with a teacher. Spending time in front of the screen does not necessarily __________(63) a child&39;s performance at school. Even if a child is__________ (64) crazy about using the Internet,he or she is probably just__________(65)through a phase, and in a few months there will.be something else to worry about!
51 查看材料

A. always
B. rarely
C. never
D. ever