问题
选择题
Tom was about to close the window ______ his attention was caught by a bird.
A.when
B.if
C.and
D.till
答案
答案:A
考察固定句型。Be about to do sth when…正要做某事,在这时…(发生了意料之外的事情);故A正确。
Tom was about to close the window ______ his attention was caught by a bird.
A.when
B.if
C.and
D.till
答案:A
考察固定句型。Be about to do sth when…正要做某事,在这时…(发生了意料之外的事情);故A正确。