He__go to the libraryto read some books,when he was in Beijing university. Acould Bwould C used to
问题描述：
He__go to the libraryto read some books,when he was in Beijing university. Acould Bwould C used to
详细说明
答
use to
vt.习惯于,经常.
他在北京大学念书时,经常去图书馆看书.