连词throught 后面是doing exercise 还是do exercise

问题描述:

连词throught 后面是doing exercise 还是do exercise
I make a lot of friends with same interest through do exercise in

through为介词,介词后跟名词、代词或相当于名词的词作宾语;
后接动词时需用动名词即-ing形式,所以应该是through doing exercise