1. Leonidas............the king of the Spartans a. has been b.is c. was d. were 2. I was walking home, when the rain.... a. started b. was starting c.is starting . has started 3. Over 40 years ago astronauts...on the moon a. are landing b.were landing c. have landed d. have won 4. Yesterday Greece.....the USA a. was playing b. plays c. has played d. is playing 5. We were watching amovie about aliens while we .......pepperoni pizza a. ate b. have eaten c. were eating d. are eating 6. He......his mom after school every day if he ....... much homework a. would help/didn't have b.will help/doesn't have ( mình lọc ra hai đáp án này )