Question

Antioxidants were first cast into doubt ……….a………. (during / from / since) a major clinical trial in the US, in ………….b………… (which/ what / that) a very common antioxidant, beta carotene, ………c……….. (was / were / is / are) tested for ………d………….. (its / it’s / their / theirs) efficacy against lung cancer in high-risk subjects. ………e………… (To / For / With) the surprise and concern of the scientists ………f……… (those / that / which / whose) individuals taking the supplement ……g………… (intend / intended / intended) to reduce the risk of cancer were ………….h…………… (on / at / with) a significantly higher risk …………….i………….. (for / of / to) developing lung cancer.

Answer 1

Answer:

a) during

b)that

c)was

d) it's

e) with

f)those

g) intended

h)with

I)for