He was busy preparing his lessons, only _________ occasionally to have some tea.[ ]A. to stopB. havi

题目简介

He was busy preparing his lessons, only _________ occasionally to have some tea.[ ]A. to stopB. havi

题目详情

He was busy preparing his lessons, only _________ occasionally to have some tea.
[     ]
A. to stop
B. having stopped
C. to have stopped
D. stopping
题型:单选题难度:中档来源:天津市期中题

答案

D

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