He told us an interesting story about himself, _______________why he didn’t succeed that time. 
#97865
A
explain
B
to explain
C
explained
D
explaining
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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
______in her most beautiful skirt, the girl tried to make herself ______ at the party. 
#93329
A
Dressed; noticed
B
Dressing; noticed
C
Dressed; noticing
D
Dressing; being noticing
 -Would you like to sing a song for us?-_____.
#98322
A
I prefer not
B
I prefer not to
C
I prefer to not
D
I wouldn't prefer