--- What do you think of the standard of the new curriculum(课程)? --- It is certain to have a great _______ upon the future of both teachers and students.
He thinks so highly of the movie Avatar that he thinks it is worth seeing ______ second time.
It was probably _______ the wrong operation(操作) of the pilot that caused the plane to crash.
—I’m your old friend Tom. We used to study in the same high school. —Tom? I’m sorry I ______ you. Where have you been all these years?
Come on!Tell us ______ you remember about what happened then.
The driver explained to the policeman that he hadn’t done that ______ purpose, hoping that the punishment wouldn’t be too serious.