Either you or he _________ to be invited to the party．

–What ___ the number of the students in your school?–About two thousand. A number of them_____ from England.

Either you or one of your students _______to attend the meeting that will be held tomorrow.

Don't miss the meeting. The questions to be discussed at it _____ of great importance. 

Every hour and every minute ______precious to us because only six months are left for us to prepare for the college entrance examinations.