【題目】It is necessary for us students _______________ the listening ability.

【題目】— There is ________ and the river runs too quickly for boats.

【題目】—I’m very busy because I am having the final exams this week.

【題目】—________ listen to music in the classroom.

【題目】—You ________. Don’t talk on the phone.

【題目】It usually takes him half an hour ________ the homework.

【題目】—Can you finish your math homework this afternoon?

【題目】It’s raining all day, so I ________ stay at home.

【題目】—___________can we become good learners?

【題目】—Why do you want Lisa to help at the old people’s home?