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ol bought it. A. three hundred B. three hundreds C. hundred ( )39.— What39。s ________. A. twelve B. twenty C. thirty173。t think ________ should be allowed to am worried about your safety. A. fifteen years old B. fifteen173。olds C. fifteen173。old ( )41.— What39。s June ________, 2020. A. seventeen B. the seventeen C. the seventeenth ( )39。s reported that there are more than 300 ________ smokers in China, nearly a third of all the smokers in the world. A. million B. millions C. million of D. millions of ( ) is reported that people throw ________ plastic bags along this street every week. A. hundred B. hundreds C. hundreds of D. hundred of ( )39。s hard to imagine she is already in her ________. A. fifties B. fifty C. fiftieths D. fiftieth ( ) ________ biggest earthquakes in Nepal (尼泊爾 ) have killed more than 8,000 people. A. two B. second C. twice ( ) and girls, please turn to Page ________ and look at the ________ picture. A. Fifth。 five C. Fifth。 fifth ( ) is said that ________ students like to talk with friends online. A. two173。three C. two173。m satisfied with my ________ shopping online. A. one B. the one C. the first D. first 答案 1— 5 DBBBB 6— 10 ACAAB 11— 15 DBCBB 16— 20 ABABA 21— 25 DDCDD 26— 30 CBABA 31— 35 DBACA 36— 40 CBAAB 41— 45 CABAC 46— 50 AADAD 7C 學(xué)科網(wǎng),最大最全的中小學(xué)教育資源網(wǎng)站,教學(xué) 資料詳細(xì)分類下載!