问题

This is the factory ____ we worked a yearago
A:is happened
B:was happened
C:happened
D:has been happened
B:was happened
C:happened
D:has been happened
正确答案是:
同类题型
What a woman! I just wonder how she managed to keep smiling after all that she had ________.
Itmusthaverainedlastnight,______? [ ]
The doctor recommended he ____ a few more days in hospital.
Once you _________ used to the weather here, you ________ to live here
Though ______ after a day’s hard work, he still told his children stories until they fell asleep.