The scientist did ＿＿ experiments to test the new drug.
| A．a series of | B．a good many of | C．a great many | D．a lots of |
相关知识点
推荐试卷
The scientist did ＿＿ experiments to test the new drug.
| A．a series of | B．a good many of | C．a great many | D．a lots of |
试题篮
()
粤公网安备 44130202000953号
