Nearly half a million immigrants,many of them English—speaking,     in the country during the last quarter of the nineteenth century.
#102171
A
have arrived
B
had arrived
C
arrived
D
have been arriving
推荐题目
I won’t tell the student the answer to the math problem until he ____on it for more than an hour.
#99288
A
has been working
B
will have worked
C
will have been working
D
had worked
He gave us advice that this work ________.
#99563
A
should cancel
B
would be cancelled
C
not be cancelled
D
should not cancel