The computer was invented in the 1940’s and ______ quite a lot ever since.
#100726
A
was changed
B
had changed
C
has been changed
D
will change
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—Remember how we met for the first time, Dick?—Of course I do. You _______ to the teachers' office hurriedly and _________ me.
#101624
A
had walked; weren't noticing
B
were walking; didn't notice
C
had been walking; noticed
D
walked; had noticed
 The teacher told me that the earth _______ round.
#103196
A
was
B
is
C
were
D
are turning