题目内容
32、They were playing in the garden they heard a scream.
A．when B．as C．until D．while
试题答案
32、A
They were playing in the garden they heard a scream.
They were playing in the garden they heard a scream .
A．while B．as C．until D．when
They were playing in the garden ________ they heard a scream．
A．while．
B．as
C．until
D．when