—Why didn’t you buy the gold ring? —I ______ but I didn’t have the money.
#103211
A
would have
B
bought
C
would like to
D
had bought
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 I know Mr. Brown; we ______ to each other at an international conference.
#104101
A
are introduced
B
are been introduced
C
were introduced
D
had been introduced
The government has taken some measures to prevent more trees from _____.
#100712
A
cutting down
B
cut down.
C
being cut down
D
been cut down