Bài 15 BTVN

Submitted by api on Fri, 04/17/2026 - 19:33

<h2><strong>Exercise 1: Give the verbs in the correct form of the past perfect tense.</strong></h2><p><br>&nbsp;</p><ol><li><strong>The robbers&nbsp;left / had&nbsp;left the bank when the policemen finally&nbsp;arrived / had arrived.</strong></li><li>When the rain&nbsp;<strong>started / had started&nbsp;</strong>, the Atkinsons&nbsp;<strong>finished / had finished&nbsp;</strong>planting trees.</li><li>By the time Rebecca&nbsp;<strong>wen