Don’t put off today’s work for tomorrow. I mean, today’s work _____today.

I didn’t manage to do it ________ you had explained how.[ ]

5. Schools ban students from bringing mobile phones, which are used to _________ in exams.

24．This is an exciting area of study，_______new applications are being discoveredalmost daily．

How far is it from your school to Lake Taihu—It’s about ________ drive.