Have you seen my dog? I _________ for it and still haven’t found it.
#103475
A
looked
B
was looking
C
have been looking
D
had been looking
推荐题目
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
—Can you tell me what time the flight to Detroit leaves?—I’m sorry, but it _______________.
#100400
A
has been canceled
B
had been canceled
C
has canceled
D
had canceled
When and where to go for the on-salary holiday _____ yet.
#103343
A
are not decided
B
have not been decided
C
is not being decided
D
has not been decided
Since then the number of people taking driving lessons______20%.
#100850
A
has increased to
B
increases by
C
has increased by
D
have increased