1.I pay for the T-shirt over the Internet.对over the Internet

1.I pay for the T-shirt over the Internet.对over the Internet提问
__________ do you pay for the T-shirt?
2.______ does Lingling pay for the book?
3.______are you going to spend your weekend
(填类似于What,Where等的词)
第二个问句的回答为 Over the Internet.
第三个问句的回答为 I'm going to the countryside to visit mt grandparents.