Various efforts over the centuries _________ to predict earthquakes to reduce the damage.
#99978
A
are being made
B
have been made
C
were made
D
were being made
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George said that he would come to school to see me the next day, but he ______.
#102153
A
wouldn't
B
didn't
C
hasn't
D
hadn't
Mr Brown and his wife expect that by the year 2015 they __________ in Beijing rather than in other cities.
#102370
A
are living
B
will be living
C
have lived
D
will have lived
Whatever may happen, go on until you succeed, and you _______ what life is all about.
#102853
A
will know
B
know
C
have known
D
will have known
Large quantities of oil in a place near my hometown recently.
#102718
A
has discovered
B
have discovered
C
has been discovered
D
have been discovered
Helen ________ her keys in the office so she had to wait until her husband ______ home.
#101502
A
has left; comes
B
left; had come
C
had left; came
D
had left; would come