______ hard all day, I fell fast asleep. 
#90100
A
Working
B
Having worked
C
Worked
D
To work
推荐题目
The student _________ forward to going abroad for further study.
#98402
A
referred to looks
B
referred to look
C
refers to look
D
referring to look
He was busy writing a story , only _______ once in a while to smoke a cigarette.
#94052
A
to stop
B
stopping
C
to have stopped
D
having stopped