英訳に間違いが有れば正してください。
彼らが40年以上にわたって使用してきた除草剤が、彼らに癌を発生させた。
The weed killer they had been using for more than 40 years had caused them to become cancer.
ヒント
癌
答え becomeをgetにする
The weed killer they had been using for more than 40 years had caused them to get cancer.
become＋病気で病気になるという表現はない。
get cancer
癌になる
