The word "exotic" in paragraph 4 could best be replaced by__________.




A.formal
B.informal
C.foreign
D.expensive

Imagine you _________ a flight, would you have gone by train?




A.haven’t booked
B.don’t book
C.hadn’t booked
D.won’t book

“Did Peter go downtown by car or by train?”
“He __________ by train because his car was in the mechanics.”




A.must go
B.must have gone
C.had gone
D.has to go

The professor told me that I was doing well; therefore, my final grade was awful.




A.told me
B.was doing
C.therefore
D.grade

A.delicious
B.natural
C.careful
D.fluently

A.healthy
B.marathon
C.weather
D.thousand

______(10)




A.nature
B.natural
C.naturally
D.natured

_________(57)




A.gold mines
B.gold mining
C.gold miners
D.mining gold

A.gather
B.ethnic
C.there
D.although

The boy asked me what the rubber knife was used for.
He said, "................"




A.What was this rubber knife used for
B.What this rubber knife was used for
C.What is this rubber knife used for
D.What this rubber knife is used for