1. There are 30 girls in our class(phần gạch chân là"30").
=> How many girls are there in our class? 

2. Mrs. Robinson will go to Hue next month(phần gạch chân là "next month").
=> When will Mrs.Robínon go to Hue?

3. My father can drive carefully(phần gạch chân là "carefully").
=> How can your father drive?