K
keep an eye on: check something regularly.
"You're busy, so you'll need to keep an eye on the time.
Remember that we have to leave at 4:30."
keep an eye out for: watch for.
"I'll keep an eye out for John. If I see him, I'll tell him you want to talk to him."
keep one's chin up: remain brave and confident in a difficult situation;
don't despair or worry too much.
"I know that things have been difficult for you recently,
but keep your chin up. Everything will be better soon."
keep one's nose to the grindstone: stay diligent; steadily work hard,
without breaks or an uneven pace.
"If I keep my nose to the grindstone, I should be finished by the end of the day."
keep/stay in touch (with someone): remain informed (about someone) / in contact (with someone) by writing, calling, sending e-mail, etc. on a regular basis.
"I haven't seen Frank for two or three years but we keep (stay) in touch by e-mail."
keep one's fingers crossed: hope for the ***t.
A: "How did you do on the test?"
B: "I think I passed, but I won't know until tomorrow.
I'm keeping my fingers crossed!"
kid (noun): child.
A: "You have three kids, don't you?"
B: "That's right. I have two girls and a boy."
kid (verb): playfully say something that isn't true.
"I was kidding when I said my teacher was a monster. She's strict,
but she's actually a very nice person."
kind of: rather; more or less; a little.
"I'm feeling kind of hungry. I think I'll make myself a sandwich."
a klutz: an awkward, uncoordinated person.
"Don't ask Jeff to dance with you. He's a real klutz and will probably step on your feet!"
a know-it-all: someone who acts as if he/she knows everything--as if no one
can tell him/her anything that he/she doesn't already know.
"Don't try to make any suggestions to Bob. He's a know-it-all
and won't pay attention to anything you say."
know something backwards and forwards: know/understand something
completely and thoroughly.
"If you have a question about html tags, ask Susan. She knows html
backwards and forwards."
know something inside out: know/understand something thoroughly.
"If you have a question about grammar, ask Dr. Martin. She knows grammar inside out."