动词-ing形式作状语 — 英语词汇题
题目
用所给动词的适当形式填空（注意动词-ing形式作状语的用法）：1. ______ (hear) the good news, she couldn't help smiling. 2. ______ (work) hard, you will pass the exam. 3. He sat there, ______ (read) a novel quietly. 4. ______ (not know) what to say, he remained silent.