I could not _______ the lecture at all. It was too difficult for me.

He was amazed ______ the beauty of the sunset.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. 

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best completes each of the following exchanges.

Ann and John is talking about social network.

- Ann: “Today social network plays an important role in communication.”

- John: “________”

You’ll get a better _______ of exchange at another bank.