问题
Can you tell me ________ the train was invented
A:what
B:who
C:when
D:which;
B:who
C:when
D:which;
正确答案是：
同类题型
Mr. Lee, you have got the first prize in thecompetition. Congratulations!— _______.
My sister has achieved her goal after years of hard work.— Great! ________
They have lived in this village________several years ago
Shall I tell Ann how to improve for painting?—Yes, but ____ of suggestions may discourage her