When the teacher came into the classroom, the students _______.
| A．stop to talk | B．stopped to talk | C．stopped talking | D．stop talking |
This is such an _________ story that we` re ___________ in it.
| A．interesting; interested | B．interested; interesting |
| C．interesting; interesting | D．interested; interested |
Lucy is a____ girl from America.
| A．ten-years-old | B．ten-year-old | C．ten year old | D．ten years old |
_________ very important for her to work hard in all her subjects.
| A．That’s | B．This is | C．It’s | D．Its |
Elvis Presley has sold more than one______ records all his life.
| A．billion | B．billion of | C．billions of | D．billions |