1)muck in：与(他人)分担
2)winkle out：探听到； (winkle是一种食用螺)剔出，费劲取出；套出(信息)
She always manages to winkle secrets out of people.
她总是能从别人那里探听出秘密。
winkle picker是名词，意为"尖头皮鞋"
3)tie up the loose end：
做收尾工作
例句：I need you to quickly tie up the loose end on your current task.
4)cut corners：抄近路；以简便方式做事
例句：The mechanic must have cut corners when he served my car. It is broken down again！
5)keep oneself up to speed：give the person the most up-to-date information related to sth. 给予最新信息联系；随时保持信息畅通
=“I will keep you in the loop.” 之外，也可以说：
I will keep you informed.
I will keep you posted.
I will keep you updated.
例句：a)Covid-19 closed the doors of our business for a long time. Luckily, I kept myself up to speed while working from home.
b)I keep myself up to speed on what my baby eats...so I know exactly what he needs when my wife is working.
6)give someone the runaround：敷衍某人；答非所问
7)turn tail (and run away)：turn around 夹着尾巴逃跑了
Continue with your English.Don't turn tail.
8)throw under the bus：为了自身利益背叛(伙伴，同事或亲密朋友)
例句：I am sure that my boss will throw me under the bus for the failed project.
我确定老板为了他自己的利益背叛我，让我为失败的项目当替罪羊。
9)come a long way：make significant progress at sth. 取得很大进展
She has come a long way with her rehabilitation.她的康复取得很大进展。
10)hit the ground running：旗开得胜
11)have a lot going (for someone)：have a lot of good things for you有许多好事/有利条件； good future 有光明的前途
He looked more confident. Does he have a lot going for him?
Yes, he travelled the world and experienced many things.
12)knock (it) off：stop in a negative way 停止，阻止，停工
13)plain sailing/smooth sailing：一帆风顺 It is a nautical term that means sailing is easy and without problems
14)cash in your chips：(俚语)die； stop playing the game of life 停止玩生命游戏
15)cash in on (sth.)：趁机利用；谋取赚钱means to benefit from the certain fact...but it's kind of immoral ...
If you watch my videos, you're really gonna cash in on your time.