6. I ______ Texas State University now.
A. am attending
B. attend
C. was attending
D. attended
7. He has been selling motorbikes ________.
A. ten years ago
B. since ten years
C. for ten years ago
D. for ten years
8. Christopher Columbus _______ American more than 500 years ago.
A. discovered
B. has discovered
C. had discovered
D. had been discovering
9. He fell down when he ______ towards the church.
A. run
B. runs
C. was running
D. had run
10. We _______ there when our father died.
A. still lived
B. lived still
C. was still lived
D. was still living