They are late. The film __________ for five minutes.

Mom, I have great trouble with my math. —Never __________ and you will learn it well.

Do you plan to take a vacation this month?—Yes, we ________ to Hainan and _______ there for five days.

I have to well prepare for the math test tomorrow because it ______ 30% of the final exam.

______ a certain doubt among the people as to the practical value of the project.