clam|clammed|clamming|clams

当被问到敏感问题时，他突然沉默不语。

When asked about the sensitive issue, he suddenly ___clammed up.

孩子们喜欢在退潮时去海滩挖蛤蜊。

The kids enjoy ___clamming on the beach when the tide is low.

我们在海边挖了一些蛤蜊做汤。

We dug some ___clams by the shore to make soup.