A police officer was killed when a bomb on his car _______.
—________ I take the book out? —I'm afraid not.
Doctors say that exercise is important for health, but it ________ be regular exercise.
One of our rules is that every student ________ wear school uniform while at school.
The new law states that people ________ drive after drinking alcohol.
—Good morning. I've got an appointment with Miss Smith in the Personnel Department. —Ah, good morning. You ________ be Mrs. Peters.