He said he had been to the Great Wall before .
I had learned 1000 new words by last week .
The train had left before I got there .
She told me that she had been ill for two days .
I didn't know where he had gone . He said he had been to the Great Wall before .
I had learned 1000 new words by last week .
The train had left before I got there .
She told me that she had been ill for two days .
I didn't know where he had gone .