问题
Our town________poor in the past，but great changes________in the town in the past three years.[ ]
A:was；had taken place
B:was；have taken place
C:has been；had taken place
D:has been；have taken place
B:was；have taken place
C:has been；had taken place
D:has been；have taken place
正确答案是：
同类题型
How do you like the necklace?—Oh, perfect! It’s the ____ thing I’m after.
Wolves are very ______: they can live in forests, on open plains, or in the snows of the Arctic.
Either you or one of your students _____to attend the meeting that is due tomorrow. [ ]
We failed in the singing competition. — ______ . Better times are waiting for you.