—Does the old man know the museum very well? —No, this is the first time he __________ here.
#86004
A
was
B
came
C
has been
D
is coming
推荐题目
You should never base anything on a theory that _________ impractical in practice.
#86010
A
is proved
B
prove
C
proves
D
proved
When and where to go for the on-salary holiday____yet.
#86337
A
are not decided
B
have not been decided
C
is not being decided
D
had not been decided.
Faced with a bill for $10,000, _____.
#86001
A
Smith has taken an extra job
B
the boss has given Smith an extra job
C
an extra job has been taken
D
an extra job has been given to Smith
--What is that on the table? --Oh, a set of ___________ on the table.
#43644
A
key is
B
keys are
C
keys is
D
key are