Question

【题目】China has been its efforts to build a close relationship with many African countries.
A.turning up
B.stepping up
C.adding up
D.making up

Answer 1

【答案】B
【解析】句意：中国一直在努力加快步伐与许多非洲国家加强密切联系。turn up“出现，声音调大”；step up“提高，增加”；add up“加起来”；make up“装配，构成，组成”。分析句子可知，与各国加强关系从过去一直到现在，而且动作一直在进行，用现在完成进行时。故选B项。