Under the section, "Asking for permission" in module 2.7 , there seems to be a small text error. The て-form of あける is introduced first in writing:
まど を あける → まど を あけて も いい です か?
mado o akeru →Mado o akete mo ii desu ka?
to open a window →May I open the window?
And then followed by the tutor audio, 「まど を あけて も いい です か?」
However, the very next table has the same written information:
まど を あける → まど を あけて も いい です か?
mado o akeru →Mado o akete mo ii desu ka?
to open a window →May I open the window?
But then the tutor audio (and writing sample) says, 「まど を しめて も いい です か?」(May I close the window?)
まど を あける → まど を あけて も いい です か?
mado o akeru →Mado o akete mo ii desu ka?
to open a window →May I open the window?
And then followed by the tutor audio, 「まど を あけて も いい です か?」
However, the very next table has the same written information:
まど を あける → まど を あけて も いい です か?
mado o akeru →Mado o akete mo ii desu ka?
to open a window →May I open the window?
But then the tutor audio (and writing sample) says, 「まど を しめて も いい です か?」(May I close the window?)