Zhang Liang was a cook years ago, but he______ a model over the years.
#37441
A
has become
B
became
C
becomes
D
has been
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-When did your computer go wrong? -Last night, while I_______ some music from a website.
#38149
A
downloaded
B
am downloading
C
was downloading
D
have downloaded
Mr. Wu___this math problem____him many times, but he still doesn’t understand it.
#38768
A
explains ; to
B
has explained ; for
C
has explained ; to
D
explained ; with
The film______for ten minutes when we got to the cinema.
#37520
A
has alrealy been on
B
has already begun
C
had already been on
D
had already begun