1. take out（ローンなどを組む）
= He took out a 20-year mortgage.
2. teem with（たくさんいる、うじゃうじゃいる）
= The pond was teeming with carp.
3. meddle in（干渉する）
= Don't meddle in othe people's business.
4. back out（手を引く、撤退する）
= The buyer of our house backed out of the contract at the last minute.
5. commiserate with（同情する）
= She commiserated with the victims of the flood.
6. pin down（突き止める、はっきりさせる）
= It is difficult to pin down the causes of cancer.
7. peter out（収まってくる、尻すぼみになる）
= The storm has petered out sooner than expected.
8. thumb through（ざっと目を通す、パラパラとめくる）
= I thumbed through the report.