(2014·山东实验中学一模)With his attention________on his mobile phone,he didn’t notice his headteacher’s appearance.
#90921
A
fixed 
B
having fixed
C
fixing
D
to fix
推荐题目
_________, the car could not be started.
#91449
A
Having lost the key
B
He lost the key
C
The key was missed
D
The key lost
Mary often stays up, reviewing her lessons, books___ all over the desk.
#91213
A
spreading
B
spread
C
are spreading
D
to spread