Lisa's clothes were all jumbled up together in her bedroom.丽萨的衣服杂乱地堆在她的卧室里。
1.jumble：v. 使杂乱；使混乱
例如：Don't jumble the innocent and the guilty.（ 不要混淆无辜的人和有罪的人。）
Don't jumble up your ties and socks now that I've sorted them out.（你的领带和袜子我已整理好了，不要把它们混到一起了。）

The basketball player has winning on the brain.那名篮球运动员一心想着打赢比赛。
1.on the brain：phr. 念念不忘，着迷
例如：He seems to have money on the brain all day.（他似乎整天都在想钱。）
He has his lost bicycle on the brain.（他念念不忘那辆丢失的自行车。）

Admitting weakness may put you at a disadvantage.承认弱点可能会使你处于不利地位。
1.at a disadvantage：处于不利地位
例如：She wasn't able to endure being at a disadvantage.（她不能忍受处于不利的地位。）
He's bound to feel at a disadvantage.（他必然会感到处于不利地位。）

The staff forged the supervisor's signature on the cheque.那个员工在支票上伪造了主管的签名。
1.forge：v. 打制，锻炼，伪造
例如：George was forced to forge a signature.（乔治被迫伪造签名。）
I learnt how to forge someone else's signature.（我学会了如何假冒他人的签名。）

The region abounds with rain all year round.这个地区终年多雨。
1.abound with：充满，盛产
例如：Streams abound with fish.（河里鱼很多。）
This country used to abound with snakes.（这个国家过去有很多蛇。）

楼主 不错

好帖。