单选题
While typing, Helen has a habit of stopping
once in a while
to give her long and flowing hair a smooth.
A、
occasionally
B、
simultaneously
C、
eventually
D、
promptly
【正确答案】
A
【答案解析】
[解析] occasionally“偶尔，间或”；simultaneously“同时”；eventually“最终，终于”；promptly“立即；迅速地”。
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