Решение #
1) were playing, at half past six (играли, в половине седьмого);
2) were doing, at a quarter to two (осматривали, без четверти два);
3) was showing, at half past ten (показывала, в половине одиннадцатого);
4) was reading, at a quarter past nine (читал, в четверть десятого);
5) were buying, at six o’clock (покупали, в шесть часов).