问题
选择题
I ___ read your letter when the bell rang.
A．have
B．was about to
C．wanted to
D．should have
答案
答案：B
be about to do 表示过去即将发生的动作。
搜题请搜索小程序“爱下问搜题”
I ___ read your letter when the bell rang.
A．have
B．was about to
C．wanted to
D．should have
答案：B
be about to do 表示过去即将发生的动作。