______ you _______ for a picnic next Sunday?
He had ________ that he had difficulty finding a job.
I received a number of ________, but ________ of them is valuable to me.
---What about the popcorn?---Wonderful! Nothing tastes ________.
---There is somebody knocking at the door. Who________ it be?---I’m not sure. It ________ be a postman.
_______ the teachers in the school is one hundred, and _______ of them are women teachers.