If no one _____ the phone at home, ring me at work.

We have to _____ the wheat as soon as possible because a storm is on the way. [ ]

forgot his phone number that day.I had to ___ the phone book to find it.

The result of this study confirmed the ________ assumption made by the scientist months ago.

The number of the students in our school ___ 1,000, and a number of them ___ boys.