What was he doing ______ his father _______ back?A. while; came B. when; came C. when; was coming
Mary said that she ______ to Guangzhou.
_____ good news! The World Cup will be held in South Africa.
Alice had a wonderful time yesterday,_______?
Mary told me that the book must ______ to the library in two days.
______ you wait a few more minutes? It’ll be your turn soon.