When I last saw him, he _____ in London

1. When I last saw him, he _____ in London.

A. has lived

B. is living

C. was living

D. has been living

2. We _______ Dorothy since last Saturday.

A. don’t see

B. haven’t seen

C. didn’t see

D. hadn’t seen

3. The train ______ half an hour ago.

A. has been leaving

B. left

C. has left

D. had left