The drug used to treat this disease causes bad side effects, some of which ________ deadly.
Subway Line 4, ______ into use in September 2009,has made traveling in Beijing easier.A. having been put B. puttingG. being put D. put
—Could you turn the TV down a little bit?—I'm sorry. Is it ______ you?
He was ______ by love, and expected nothing in return.
The ______ you sign your name can tell experts a lot about you.
He said that very clearly so that nobody was in any ______ about what he meant.