The child is much too young; I object ______ him aloneat home.

______ the new medicine for a year and we’ll see how well it works. [ ]

Scientific surveys conducted during the climbs ______that Mount Huandoy in Peru______ 6395 meters high

They _____ on the program for almost one week before Ijoined them, and now, we ____on it as no good results have come out so far.

We should _______ the school rules as students.