a pair of_________(shoes,trousers.) 后面是复数还是单数?

a pair of_________(shoes,trousers.) 后面是复数还是单数? l've got a birthday card from a friend of_________. That's a lot of_________ Interesting.Funny.FunWhere is your house I don't know the a________when we do something .we hope we can be s_______ at last The boy in white is a friend of_________(I) a pair of gloves a pair of shoes 为什么glove加s,shoes不加s a new pair of sock s与a pair of new sock s有区别吗 --Do you know ______ man in blue?--Yes,he’s a professor of_________ university--Do you know ______ man in blue?--Yes,he’s a professor of_________ university.A.the,a B.a,an C.the,an D./ ,the 为什么第二个空不填an a pair a pair a pair of shoes (shoe加s吗)boot呢? 改错:Is this a pair of jeans kitty's? a pair of sports shoes中的sports为什么加s It's a pair of trainers.的正确写法 用a,chopsticks,you,here's,of,pair,for 造句 can you think of_________?A how old is he B how old he is C what's his job D what is he选哪个?说理由还有一个问题Tom,___________in bed,这个空为什么不能填no reading shoe,glove在英语中出现时用不用加s,就像a pair of scissors,是不是a pair of shoes,a pair of gloves a pair of socks如果要用复数表示（即：two）,pair要不要加s?我的意思是:two pair of socks的时候,pair要不要加s? a pair pf socks如果要用复数表示（即：two）,pair要不要加s?我的意思是:two pair of socks的时候，pair要不要加s？