Little ________ that we were watching his every move，so he seemed to be going his own way in this business.
| A．he realized | B．he didn't realize |
| C．didn't he realize | D．did he realize |
______ life began on earth is one of the biggest puzzles that scientist found hard ______.
| A．How; solving | B．When; to be solved |
| C．How; to solve | D．Which; to solve |
Was it because his mother was ill ______ he didn’t go to school?
| A．so | B．that | C．why | D．when |
What ______ will it ______ whether you are a boy or a girl ? As long as you set your mind to it, nothing can be difficult.
| A．difference, tell | B．sense, make | C．use, make | D．difference, make |
which of the following sentences is right ?
| A．It is the first time that I have seen Andy’s concert. |
| B．It was until her father came back that she didn’t go to bed. |
| C．We feel that our duty to help the people in disaster-stricken areas. |
| D．I’m about to go shopping tomorrow. |
The policeman stopped him when he was driving home and ______ him ______ speeding.
| A．warned; for | B．accused; of | C．charged; of | D．blamed; on |