------What's the matter with Tim? ------Oh, Tim's cell phone was left in a taxi accidentally, never ________ again.
—What happened to you on your way back to the hotel last night ?—I lost my way in complete darkness and ,__________ things worse , it began to pour .
Comparison may make something appear more beautiful than it is when _________ alone.
—Where is our English teacher?—She is in the classroom, _____ the exercises _________ the students have done at home.
Tom does speak Chinese well, but his reading and writing skills leave much _______.
To get an education, _______.