–No wonder your boss blamed you. With all the work on hand, you ____ to the cinema last night.A shouldn’t have gone B mustn’t have gone C couldn’t have gone D shouldn’t go
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.