______ it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal.
-----When will they come back? -----I _____ don’t know.
She was more headstrong than ______.
Though ______, many laws of nature exist.
The servant did _____ she could ______ the revolutionary.
The missing boys were last seen _____ near the river.