The reason he has been such a success ______ he never gives up.
A. is what
B. is that
C. is because
D. is
"I like your furniture very much.""Thank you. We bought ______ in Denmark."
A. the most of them
B. most of them
C. the more of it
D. most of it
Students today are writing ______ of poetry.
A. a great many lines
B. quantities of lives
C. lots lines
D. a large number
The part of the building below 90th floor ______.
A. remained where they were
B. cracked down because of the burning
C. was hammered down by the falling upper part
D. was safe after the attack
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