--Did you visited the military museum?--Yes. Not until quite recently ________ any idea what a guided missile was like.
Thousands of works of art, ________ the most famous paintings, were ________ during the war.
Here is the girl _________ school bag has been stolen.
He was about to tell me the matter _______someone stopped him
______improve his oral English, he took part in the summer course
Li Ming told me that he was interested in many sports, ___swimming, shooting, skating and so on