In extreme weather, a worn tyre can brea
问题:
In extreme weather, a worn tyre can break easily ______ it’s mended, as is often the case.
A.when
B.where
C.which
D.that
In extreme weather, a worn tyre can break easily ______ it’s mended, as is often the case.
A.when
B.where
C.which
D.that