It __________ be the vocabulary that caused you the problem in the exercise because you know a lot of words.
What surprised me was not what he said but_______he said it.
Generally speaking , ______according to the directions , the drug has no side effect .
You've missed your ____, and you will have to wait for the next round.
— Do you have the time? — Sorry, I have no watch. — ____
— Thank you for a wonderful meal. — ____.