一些鸟儿在屋檐下筑巢。

Some birds were ___nesting under the eaves.

知更鸟经常在那片茂密的灌木丛中筑巢。

Robins often ___nest in that dense shrubbery.

燕子每年春天都会回到谷仓里筑巢。

The swallows return every spring to ___nest in the barn.