1．(2019·南京、盐城调研)Having lived in China for 8 years, Helen has a good ________ of both English and Chinese.
A．program B．guidance
C．command D．ability
C 解析：句意：在中国生活了八年，海伦能够熟练地运用英语和汉语两门语言。 have a good command of“对……掌握熟练；精通；掌握”。
2．(2019·盐城中学期中)________， according to the study in 6 out of 10 patients, all symptoms ________ what the researchers had expected.
A．To conclude; corresponded to
B．In a conclusion; corresponded to
C．Having drawn a conclusion; corresponded with
D．To be concluded; corresponded with
A 解析：to conclude＝in conclusion“总之”； correspond to“相当于，类似于”。
3.Digital teaching has ________ our way of learning and excited us to focus in class.
A．guaranteed B．transformed
C．evaluated D．revealed
B 解析：句意：数字教学已经改变了我们学习的方式，让我们在课堂集中注意力。 guarantee “保证”； transform “转换”； evaluate “估算”； reveal “暴露”。根据题意选B。
