✔ 最佳答案
Error and corrections:-
(1)Bob and his father (are) going fishing today.---plural no.
(2)How many (pants)=trousers have you got now?------no need (to you)----spelling on underpants;(US)--trousers.---pants.
(3)I like this shirt. How much does it cost(s)?---->Re;It does cost---It costs---Hence "Does it cost---"