A an uncertain B a slow C an unexpected D a smooth
11 Almost all economists agree that nations gain by trading with one another.
A work B profit C rely D prove
12 The conference explored the possibility of closer trade links.
A denied B investigated C stressed D created
13 The chemical is deadly to rats but safe to cattle.
A fatal B hateful C good D useful
14 During his lifetime he was able to accumulate quite a fortune.
A control B spend C collect D exchange
15 It’s impolite to cut in when two persons are holding a conversation
A leave B talk loudly C standup D interrupt