It isn't easy to be inspired in that spontaneous way for long periods_______.
问题描述：
It isn't easy to be inspired in that spontaneous way for long periods_______.
A.at a stretch
B.for a stretch
C.in a stretch
D.on a stretch
答
答案是a .考点：词组at a stretch 一口气,连续不断的
翻译：连续很长时间使自己的灵感都处于不自主状态绝非易事.