1. root for（応援する、励ます）
= I'm rooking for you.
2. sympathize with（同情する、支持する）
= I deeply sympathize with her plight.
3. flock to（詰めかける、押し寄せる）
= Thousands of shoppers flocked to the opening of the new mall.
4. rifle through（素早く探る）
= The robber rifled through her purse and took her money.
5. harp on（～のことをくどくど言う）
= My wife is always harping on my faults.
6. rope in（～を誘い込む、引き込む）
= He was roped in to play bass in the band.
7. fizzle out（立ち消えになる、尻すぼみに終わる）
= The project fizzled out due to lack of funding.
8. flare up（かっとなる、怒りなどが爆発する）
= She flared up at his remark.