Scientists have found no ________of life on Mars so far,though great efforts have made on the research.
It is required that the students ______ mobile phones in our school, so seldom ______ them using one.
The foreign teacher Mr. Halt has a strange way of writing. Here’s a notice from him, but no clear ______ of what he has written can be made at all.
When I opened the door, I found my father ______ in his chair, completely ______ in a magazine.
I feel it is you rather than the girl who ______ for being late for the speech.
I would rather you ______ me the truth; then what has happened would not have happened.