①+②+③+⑤=25 points,

①+②+④+⑤+=26 points,

①+③+④+⑤=27 points,

②+③+④+⑤=28 points,

Adding Formula 5, we can get 4×(①+②+③+④+⑤)= 132.

So 1+2+3+4+5 = 33 points.

Wei Wu answered all five questions correctly and got 33 points.

So the answer is: 33.