In the office an electrical engineer is looking through the instructions to know ________ the heat system works before the repair work.
_______ of food is in need nowadays in Africa.
I’m really tired _______ Tom. He had me _________ for two hours in the rain.
If you cheat in the exam, you could hardly _________ it.
He sat at the desk, __________ a novel.
Mary __________ the job he offered to her, but she didn’t.