Grammar Test B Answer 13

13. The unprepared hiker felt a natural urge come on while he was in the midst of a patch of Taiwan raspberry so he had no other choice but to march onward unwiped.

Ans: 13. The unprepared hiker felt a natural urge come on while he was in the midst of a patch of Taiwan raspberry, so he had no other choice but to march onward, unwiped.

1) "so" is acting as a conjunction between "The unprepared hiker felt a natural urge come on" and "he had no other choice but to march onward unwiped." Therefore, a comma must be used before the conjunction.

2) "unwiped" is a one word (past) participial phrase that comes at the end of the main clause "he had no other choice but to march onward unwiped." "Unwiped" refers back to the he. "He" is the one who is unwiped.