they __ to have discovered a cure for cancer.a claimb exclaim c.complaimd concentrating
问题描述：
they __ to have discovered a cure for cancer.
a claim
b exclaim
c.complaim
d concentrating
答
a
答
A
claim:声称
答
选A claim声称 他们声称已经发现了一种癌症疗法
exclaim 呼喊
complaim抱怨
concentrating集中