问题补充:
Last Sunday I went to visit the History Museum where I saw a pot about 1,000 years before.
A. so it had been
B. so had it been
C. what it had been
D. as it had been
答案:
A. so it had been
B. so had it been
C. what it had been
(答案→)D. as it had been
解析:句意:上周日,我去了参观历史博物馆,我看见了一个正如一千年以前一样的锅。as引导定语从句,在句中作为定语从句的宾语,可意为“正如”,故选D