题目内容
Tom was about to close the windows ________ his attention was caught by a bird.
[ ]
A.
when
B.
if
C.
and
D.
till
答案:A
练习册系列答案
相关题目
Tom made _____ great progress last semester and as _____ result, he was praised by the teacher.
| A.a; a | B.a; / | C./; / | D./; a |
Tom made _____ great progress last semester and as _____ result, he was praised by the teacher.
| A.a; a | B.a; / | C./; / | D./; a |