—_______ John this week?—Yes.—Where _______ him?—In the library.
Due to circumstances ________ our control, the performance has to be canceled.
There are some tall trees in our campus, some ________ more than forty meters.
--Late again !--Sorry. I was ________ halfway for half an hour on my way to work this morning.
Is it she or you ________ going to run for the mayor of our city?
________ we don’t care about ourselves, we don’t want our kids to live in a bad environment.