—Are you going to Dalian by air?—No, the tickets are ____expensive for me.
To understand the grammar of the sentence, you must break it ____into parts.
John is very lazy. He falls ______ behind in his studies.
--- ______ that he managed to get the information?--- Oh, a friend of his helped him.
Mr. Smith owns ______ collection of coins than anyone else I have ever met.
--- Have you been to New Zealand?--- No. I’d like to, ________.