动词短语 — 英语词汇题

根据句意及首字母提示补全单词：1. The volunteers helped c______ up the park after the picnic.（打扫干净） 2. We should visit the old people's home to c______ up the lonely grandma.（使高兴） 3. Please help me g______ out these books to the students.（分发） 4. Don't p______ off today's work until tomorrow.（推迟）