The old tower must be saved，　　　　 the cost.?

A.however　　　　　　　　　 B.whatever?

C.whichever　　　　　　　　　　 D.wherever

The poor boy is in danger. We should do all we _____ help him out.

　 A. can do 　 B. can to

　 C. can to do 　 D. can

Though they are of ____ age, they are quite ____ opposite in character.

A.an; an　　　　　　　

B.an; the　　　　　

C.the; an　　　

D.the; /

Only when I left my parents for Italy 　　　　how much I loved them.

A.I realized　　　　 B.I had realized C.had I realized D.did I realize

The manager was worried about the press conference his assistant _____ in his place but, luckily, everything was going on smoothly.（ ）

A. gave　　　　 B. gives　　 　C. was giving　 　 D. had given

Living things are dying out quickly. Let’s ask ____ destroying them in the past years.

A. what part people have been playing　　　　 B. people have played in

C. what part people have played in 　　　　　 D. people have been playing what part

Obviously, he's very disappointed at the way things have ________.

A．turned up B．turned on

　 C．turned out　 D．turned down

The gentleman will be devoted to Lily forever，________ she treats him badly.

A．even though　　　 B．however　　　

C．nevertheless　　　 D．as though