Silver is the best conductor of electricity, copper it closely.
| A．followed | B．to follow | C．following | D．being followed |
This book is said to be a special one, which __________many events not found in other history books.
| A．writes | B．refers | C．deals | D．covers |
Only when I read this story for a second time _________to appreciate its beauty.
| A．did I begin | B．that I begin | C．I began | D．had I begin |
I don’t think she’ll be upset, but I’II see her in case______________.
| A．she will | B．she is | C．she does | D．she would |
Have you seen the man ___________on the grass in the picture?
| A．lay | B．lain | C．laying | D．lying |
On the bus, a passenger found her pocket_____________ and all the money________.
| A．picked; robbed | B．stolen; stolen | C．picked; stolen | D．stolen; picked. |