By the end of the 21th century, scientists _________ the cure for the common cold.
Đáp án A
Thì tương lai hoàn thành dùng để diễn tả một hành động hay sự việc hoàn thành trước một thời điểm trong tương lai.
Dấu hiệu nhận biết: by + mốc thời gian trong tương lai
Dịch nghĩa: Vào cuối thế kỷ 21, các nhà khoa học sẽ tìm ra phương pháp chữa bệnh cảm thông thường.
The school was closed for a month because of serious ………… of fever.
At the time many rulers were afraid of science, and (130) ______connected with it was in danger.
People usually can get sufficient _________ of the calcium their bodies need from the food they consume.
It is stated in the passage that torches for lighting were made from ______.
The new school complex cost ______ the city council had budgeted for.
The planes were delayed and the hotel was awful, but ______ we still had a good time.
According to the passage, which of the following sentence is NOT true?
The word “gloomy” in the passage is closest in meaning to ________.