单项选择题 The book was (so bored) that I (returned it) (to the library) (without finishing) it.

单项选择题 John said his mother (would buy him) a (five-speeds) racing bicycle (for) his (sixteenth birthday).

单项选择题 (Because of) the severe snow storm and (the) road blocks, the air force (dropped food) and medical supplies (close the city).