3 files changed, 3 insertions, 3 deletions

diff --git a/Doc/library/asyncio-sync.rst b/Doc/library/asyncio-sync.rst
index 1d299ec60a..0909352152 100644
--- a/Doc/library/asyncio-sync.rst
+++ b/Doc/library/asyncio-sync.rst
@@ -52,7 +52,7 @@ Lock
    :meth:`acquire` is a coroutine and should be called with ``yield from``.
 
    Locks also support the context management protocol.  ``(yield from lock)``
-   should be used as context manager expression.
+   should be used as the context manager expression.
 
    This class is :ref:`not thread safe <asyncio-multithreading>`.
 
diff --git a/Doc/library/marshal.rst b/Doc/library/marshal.rst
index af43944b2c..d9fd68ada9 100644
--- a/Doc/library/marshal.rst
+++ b/Doc/library/marshal.rst
@@ -40,7 +40,7 @@ this module.  The following types are supported: booleans, integers, floating
 point numbers, complex numbers, strings, bytes, bytearrays, tuples, lists, sets,
 frozensets, dictionaries, and code objects, where it should be understood that
 tuples, lists, sets, frozensets and dictionaries are only supported as long as
-the values contained therein are themselves supported.
+the values contained therein are themselves supported.  The
 singletons :const:`None`, :const:`Ellipsis` and :exc:`StopIteration` can also be
 marshalled and unmarshalled.
 For format *version* lower than 3, recursive lists, sets and dictionaries cannot
diff --git a/Doc/library/urllib.request.rst b/Doc/library/urllib.request.rst
index ac8da26c83..86f4989c1b 100644
--- a/Doc/library/urllib.request.rst
+++ b/Doc/library/urllib.request.rst
@@ -59,7 +59,7 @@ The :mod:`urllib.request` module defines the following functions:
 
    The *cadefault* parameter is ignored.
 
-   This function always returns an object which can work as
+   This function always returns an object which can work as a
    :term:`context manager` and has methods such as
 
    * :meth:`~urllib.response.addinfourl.geturl` --- return the URL of the resource retrieved,