句意:——你多长时间做一次志愿工作?——一个月一次。我认为很有意义。考查特殊疑问句。how often多长时间一次;how far多远;how many多少,接可数名词;how long多长。根据“Once a month”可知此处讲述的是做志愿工作的频率是一个月一次,疑问词用how often。故选A。
相關提問once in three months 和 once every three months 的差別在哪裡？當你搜索答案時，自動翻譯...
Once a month, I volunteer at a meal center to help serve food to people who are in need. Although my motivation begins with wanting to help others and be grateful for what I have been given, it is joy that helps bring me back when I am very busy. I first noticed this some time ...
副词You use once with "a" and words like "day," "week," and "month" to indicate that something happens regularly, one time in each day, week, or month. 每隔…一次 Lung cells die and are replaced about once a week. 肺细胞约每周死亡、更新一次。 4 副词If something was once true, ...
We try to get together (at least)onceevery month. The play was performedonly once. [+] more examples 2 :at any one time:ever She didn'toncethank me. He didn't look at meonce. 3 :at some time in the past It wasoncedone that way. ...
Rarely, once in a very long time, as inWe only see our daughter once in a blue moon. This term is something of a misnomer, because an actual blue moon—that is, the appearance of a second full moon in the same calendar month—occurs every 32 months or so. Further, the moon can ap...
D. takes the activities of a book club every month 22. What did the writer learn by staying home with her daughter? A. She was forced to stay home with her daughter. B. She enjoyed peace with her beloved daughter. C. The meaning of life is to keep yourself busy. D. A wonderful ...
Unfortunately for them and often the taxpayers, our energy systems are a bit like an aircraft carrier : they are unbelievably expensive, they are built to last for a very long time, they have a huge amount of inertia meaning it takes a lot of energy to se ...
Once a month, I volunteer at a meal center to help serve food to people who are in need. Despite the many other things that I need to do, I really look forward to meeting and serving these people, even if only briefly. Although my motivation begins with wanting to help others and be...
To do something “once in a blue moon” is to do it very rarely: “That company puts on a good performance only once in a blue moon.” The phrase refers to the appearance of a second full moon within a calendar month, which actually happens about every thirty-two months. ...