—Jack, this is the third time that you have been late this week.—Sorry, sir, but I was_____ for 15 minutes on the way here in the traffic jam.
Cultural exchange ________ better understanding.
You can come here to ask me ________ if you have any questions.
________ is no possibility ________ she can finish the task in two hours.
The purpose of new technologies is to make life easier, ________ it more difficult.
— It’s reported in the local newspaper that the murderer was caught in a small town. — ______