(13) ______
A.whom
B.where
C.whose
D.who

(15) ______
A.However
B.Moreover
C.Otherwise
D.Therefore

(16) ______
A.take
B.show
C.feel
D.get

This restaurant was highly recommended for good service, delicious food and kind- hearted boss.
A.generous and gracious
B.ambitious and greedy
C.attentive and helpful
D.polite and friendly

Vietnamese have a strong sense of hospitality and feel embarrassed if they cannot show their guests full respect by preparing for their interval.
A.friendliness
B.unfriendliness
C.generosity
D.politeness

Which country plants the most GM cotton mentioned in the passage?
A.America
B.Japan
C.Chile
D.China

Which options for non-food GM is NOT mentioned in the passage?
A.flowers
B.grass
C.tobacco
D.rubber

According to the passage, why are researchers developing GM trees?
A.To improve or make paper less expensive.
B.To produce more fruit.
C.To find a way to make paper without pulp.
D.To replace trees cut down for paper.

What is the topic of the paragraph?
A.Controversial GM products.
B.The hazards of GM products.
C.Non-food GM products.
D.GM cotton and tobacco.

The word ”switch” in the last paragraph can best be replaced by ___________ .
A.select
B.plant
C.change
D.replace