영문법 집중 훈련 문제 1회차

문제 1. Only after the research team had verified the data multiple times ( ) the results to the public.

• ① they released
• ② did they release
• ③ have they released
• ④ they had released

문제 2. Not until the new environmental policy was fully implemented ( ) to see a significant decrease in local pollution levels.

• ① the city began
• ② did the city begin
• ③ has the city begun
• ④ the city has begun

문제 3. Hardly ( ) the laboratory when the fire alarm started ringing throughout the entire building.

• ① had the scientist entered
• ② the scientist had entered
• ③ did the scientist enter
• ④ the scientist entered

문제 4. Never ( ) such a complex and intricate mechanism in all my years of studying mechanical engineering.

• ① I have seen
• ② have I seen
• ③ I had seen
• ④ did I see

문제 5. Rarely ( ) the professor allow students to submit their research papers after the strictly established deadline.

• ① is
• ② does
• ③ has
• ④ do