In the face of the variation （变异） of the virus，not only China but also other countries to take action to fight against the crisis （危机）.（ ）
| A． |
have |
B． |
has |
C． |
having |
相关试题
—Have a good day! — ___________.
| A．I see. | B．You，too. |
| C．Sounds good. | D．You’re welcome |
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