Yes, if they win next 2 matches then almost qualified.
But, only 1 win then it will depend on other results.
Aus & SA both are on 4 points, and both going to play against BAN in their next match. But, SA will face tough opponent ENG in last match. While, AUS will play against WI in last one.
In terms of balls to spare of winning matches England could easily host a new t20 match
1st match : win 70 balls to spare
2nd match : win 35 balls to spare
3rd match : win 50 balls to spare