In Numbers^x, Football^x, Present tenses^x

Can I say, (a) Please get the pencil. Okay (b) Ali, please borrow lend me pencil. (c) He catches one big fish. Okay, but odd in present tense, and odd to use "one" instead of "a" unless you want to contrast it with other numbers. He caught a big fish. He caught one big fish and several...

1a. That's not the man I married, these days he will sit in front of the telly for hours watching football. 1b. At the beginning of our relationship, he would write some romantic letters for me, he would send me flowers every day. 3a. I can swim the distance of 400m in 90 seconds! ...