

1:'You look thoughtful.’
‘I ............ about our holiday last year.’
A just think
B had just thought
C am just think
D was just thinking
Giải thích giúp mình tại sao lại chọn D chứ ko phải A với ạ!
‘I ............ about our holiday last year.’
A just think
B had just thought
C am just think
D was just thinking
Giải thích giúp mình tại sao lại chọn D chứ ko phải A với ạ!