一声很响的雷声震动了窗户。

A loud ___a ___clap ___of ___thunder shook the windows.

我们正要离开时，一声雷响让我们犹豫了。

We were about to leave when ___a ___clap ___of ___thunder made us hesitate.

狗在听到第一声雷响时就躲到了床底下。

The dog hid under the bed at the first ___a ___clap ___of ___thunder.