In February， 2020， many doctors and nurses ________ to Wuhan to save the patients．（ ）
| A． |
was sent |
B． |
were sent |
C． |
are sent |
In February， 2020， many doctors and nurses ________ to Wuhan to save the patients．（ ）
| A． |
was sent |
B． |
were sent |
C． |
are sent |
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