根据汉语意思写出句子.

问题描述:

根据汉语意思写出句子.
1、自从去年十月以来,她已写了四封信了.
she ( )four letters ( )last october.
2、他们已经等了三个小时的火车了.
they( )the train ( )three hours.
3、已经俩个月没下雨了.
it ( )two months ago.
4、从2005年开始,我叔叔就在这家工厂上班.
my uncle ( ) in this factory ( )2005.
5、王先生来中国半年多了.
mr wang ( )in china ( )more than half a year.

has written /since
have waited /for
hasn't rain/ since
has worked/ since
has been in/ since