The fire ______ for three hours before the fire fighters arrived.
A: had been burning
B: had burned
C: would have burning
D: has been burning
A: had been burning
B: had burned
C: would have burning
D: has been burning
举一反三
- The fire in Algeria had been burning for more than a year before Red Adair put it out.
- The fire ____for three hours before the fire fighters arrived.
- The fire in Algeria had been burning for more than a year before Red Adair put it out A: 正确 B: 错误
- In order to prevent the fire spreading, some of the houses nearby ______ pulled down before the firemen arrived. A: have been B: have C: had been D: had
- When the firemen arrived, the fire _________ put out. A: has B: had C: is D: had been