# 4Câu trả lời ngắnWhat had you been doing when the power went out in the past perfect continuous tense?Reading
# 7Câu trả lời ngắnWhat had the team accomplished by the end of the season in the past perfect tense?Championship
# 9Câu trả lời ngắnWhat had you been learning before the test in the past perfect continuous tense?Math
# 10Câu trả lời ngắnWhich famous scientist developed the theory of relativity in the past simple tense?Einstein