The patient’s progress was encouraging as he could _______ get o

The patient’s progress was encouraging as he could _______ get out of bed without aid.
A、hardly
B、only
C、slowly
D、mentally
【正确答案】：C
【题目解析】：A 几乎不，B 仅仅，C 慢慢地 D 精神上地。句意：这位病人的进步正是让人兴奋，因为他可以_____下床了。根据句意说明C正确，慢慢地下床。