He’s got himself into a dangerous situation _________ he is likely to lose control over the plane.
Whether by accident or____, he arrived too late to help us.
The police offered a large___for any information leading to the robber’s arrest.
The earthquake was so terrible that in only 15 seconds a large city lay____.
Jane, I’m sorry, I___you-you have changed a lot.
The lecture was so complex that I simply couldn’t ______ at all. Could you explain it to me?