Sales of CDs have greatly increased since the early 1990s, when people_____to enjoy the advantages of this new technology.
#104613
A
begin
B
began
C
have begun
D
had begun
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Computer cannot remember who _______; it simply does what _______.
#104640
A
has used it; it is told
B
will used it; it was told
C
uses it; it has told
D
has used it; it told
——Can you give me some advice on what I said just now?—— Sorry, my mind ______ .
#102959
A
has wondered
B
had wondered
C
is wondering
D
was wondering
“Mom_______ the supermarket,” the daughter said to her father.
#101779
A
has gone to
B
has been to
C
goes to
D
go to