--Would you please explain to me about the difference between the two phenomenon? --I’m sorry, but that’s just _____ I’m puzzled about.
Before the final examination, many students have shown ______of tension. Some have trouble in sleeping while others have lost their appetite.
If you read fast every day, you ______ improve your English.
They were determined to carry out the plan at first, but then we ________ persuade them to change their minds.
In many countries in the world, breakfast is a snack _______ a meal, but the traditional English breakfast is a full meal.
---Have you finished the report? ---Oh, sorry. It was so noisy in the office that I couldn't _______ down to write anything.