—It seems that you know Dr. John very well. —Of course, we ________ together for five years in the 1990s.
#105078
A
have worked
B
had worked
C
are working
D
worked
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–The Wall Street Journal is giving me a laptop with Windows XP, an operating system I found satisfying when it first _____ eight years ago.–Are you sure? You must be talking big.
#105128
A
turned out
B
brought out
C
worked out
D
came out
After the trainer was sure that the whale could look after itself, he _______ it into the sea.
#105036
A
transported
B
delivered
C
released
D
handled
—Have you ever been to Singapore?—Yes, I ________ there three times in 2009 alone.
#105081
A
have been
B
have gone
C
went
D
had gone
In some developed countries, larger population is ______________ in their big cities.
#105154
A
approved
B
gathered
C
concentrated
D
fixed