many tall builings have been __ these years .
many tall builings have been __ these years .
In the past twenty years,many tall buildings have been built
一道英语选择,These trees must have been planted three years ago,__
请说明理由1,these trees must have been planted three years ago.__
many rivers have been made ___these years
The man has been to many countries ____China these years
have been alone for all these years.中文意思是什么
for these past two years i have been able .
Our import and export have both been _____ these years.
there have been many changes in ______(recently)years
英语翻译 people have been visiting it for many years.
There have been many d_ inour hometown over the years.