Adverb Hardly (Hardly had he pulled the four of us ouf...)

[Van Khanh]

Hi,

Please choose the correct answers:

1. Hardly had he pulled the four of us ouf of the plane when it exploded.
2.Hardly had he pulled the four of us ouf of the plane than it exploded.
3.Hardly had he pulled the four of us ouf of the plane before it exploded.
4.Barely had he pulled the four of us ouf of the plane when it exploded.
5.Barely had he pulled the four of us ouf of the plane than it exploded.
6.Barely had he pulled the four of us ouf of the plane before it exploded.
7.Scarcely had he pulled the four of us ouf of the plane when it exploded.
8.Scarcely had he pulled the four of us ouf of the plane than it exploded.
9.Scarcely had he pulled the four of us ouf of the plane before it exploded.

All 9 sentences are correct?
Thanks
K