for many reasons 由于种种理由/原因
直接填with就可以了，do with=deal with 解决 的意思
选is。这题的主语是use，所以用单数
有 for many reasons .这种搭配的.
第一空用 with，，第二空用 is
can deal with , can do with problems a few seconds.
the use of computers is growing.
for many reasons ：有很多原因,因为很多原因,给很多理由,对的
A computer can do_with_problems a few seconds.
use of computers__is_(is/are)growing.
for many reasons可以搭配。
A computer can do 【with】 problems a few second.
The use of computers is growing.【主语是电脑的使用】
存在
IN 意思是在几秒内
IS
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