He was busy writing a story,only _________ once in a while to smoke a cigarette.
#98279
A
to stop
B
stopping
C
to have stopped
D
having stopped
推荐题目
She is not used to _______ like that.
#92413
A
speak to
B
spoke to
C
speaking to
D
being spoken to
Mrs. Black had her left hand ______while cooking.
#91706
A
burned
B
burn
C
to burn
D
burning
—What happened to your shoes? —They want _____ .
#98396
A
to mend
B
being mended
C
mending
D
mended