You have worked hard all week so you ____ a good rest.
A big step ____ to strengthen China’s health care systems since we launched an effort in 2008.
.---Let me help you cross the street.-- ______ ! I’m not that old.
We went into a hall, on _____ walls hung a few pictures of some famous scientists.
Newly-developed materials for spaceships can _______ extreme weather conditions.
. —Tom, you get dead drunk again! —_______? It’s none of your business.