The scientists succeeded in finding a vaccine for that disease.
A. The scientists were able to find a vaccine for that disease.
B. The scientists were finding a vaccine for that disease.
C. The scientists should have found a vaccine for that disease.
D. The scientists couldn’t find a vaccine for that disease.
Giải bởi Vietjack
Đáp án đúng: A
Dịch: Các nhà khoa học đã có thể tìm được vắc xin cho bệnh này.
After fighting the fire for 12 hours, the firemen succeeded in putting it out.
Although his legs were broken, he managed to get out of the car before it exploded.
I don’t have enough money with me now; otherwise I would buy that coat.
