The Leaning Tower of Pisa
   The Tower of Pisa is one of the most beautiful bell towers in Italy.It is not only beautiful， （A） _____ also strange —it leans to one side.Today it is known as "the Leaning Tower of Pisa".
   The building of the tower began in 1173.（B） It took nearly 200 years to complete. In 1178，when the building got to the third floor. （C） 它开始倾斜。The builders tried to make the tower straight again when they built the upper floors，but failed.
   Over the years，the tower has continued to lean further.Experts have done a lot of studies and tried to "（D） rescue" the tower.In 1990，it was closed to the public for safety reasons.After （E） a lot of effort，it reopened in 2001.Hopefully it will be safe （F） ______ at least the next 300 years.

（1）在文中（A）和（F）的空白处填入适当的单词：

but

but

；

for

for

（2）将文中画线部分（B）改写为：The builders

spent

spent

nearly 200 years

completing

completing

the tower.
（3）将文中画线部分（C）译成英语：

It began to lean.

It began to lean.

（4）写出文中画线部分（D）和（E）的同义词语或近义词语：

save

save

；

much

much

（5）从文中找出能说明本文主旨大意的短语：

the Leaning Tower of Pisa

the Leaning Tower of Pisa