The professor devoted all his life __________ the treatment of AIDS.
#105014
A
to research
B
in researching
C
to researching
D
at researching
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He was a bit nervous. He _________his spare breath with a soft sound that was almost heard by the audience.
#105056
A
gave out
B
let out
C
picked out
D
blew out.
— It is around 100 years, known to us all, ______ the first modern Olympic Games was held.— It really is. But were _____ ?
#105251
A
that; was that
B
since; was it
C
after; is that
D
when; is it
I ________ in London for many years，but I've never regretted my final decision to move back to China.
#105099
A
lived
B
was living
C
have lived
D
had lived
They were surrounded by the enemy, but finally they _____ out of the encirclement.
#105227
A
managed breaking
B
tried breaking
C
managed to break
D
tried to