5 The production costs are … in our company.
a) low
b) plane
c) poor
d) cheap
6 An exporter must … the foreign market.
a) study
b) learn
c) teach
d) examine
7 Each point of our contract must be discussed very … .
a) carefully
b) often
c) good
d) interesting
8 We were in Canada … week and purchased some new equipment there.
a) past
b) fast
c) cast
d) last
9 Arizona is one of the … states, it’s desert.
a) dry
b) drying
c) driest
d) drier