英语对once.twice等提问用什么,

英语对once.twice等提问用什么, The stadents exercise once or twice a week对once or twice提问 he goes to the movies once or twice a month 对once or twice提问 再对once or twice a month提问 对once a week提问用什么 现在完成时中的 twice once等等 是用how long 还是how ofen we have been to china twice用什么提问划线部分 twice 用什么对twice提问注：有三格___ ___ ___ 英语句型转换They eat beef 【once or twice a week】.对括号部分提问Li Lei sleeps 【for nine hours】 every day.对括号部分提问 ①对twice提问,②对twice a week提问.（答题者另附例句!）两者应该各用什么方式提问?①对twice提问,②对twice a week提问.答题者请先帮我造两句句子（第一句含twice,第二句含twice a week）然后对句中 Tehy eat beef (once of twice) a week.(对括号内单词提问) Tehy eat beef (once of twice) a week.(对括号内单词提问) 光twice 划线后用什么提问 The old man waters the flowers once or twice a day.(对划线部分提问）划线部分是once or twice a day. 对twice a month提问,应用什么疑问词 初二英语 I visited my grangpa twice a week. last year ------------------ 对划线部分提问对 twice a week提问 提问once or twice 用how often 还是how many time I shop once or twice a month 划线部分 once or twice a month 提问 对once a week 提问用? at once 划线用什么提问