.A ________may be given ____means of flags, lights, and guns.
| A．sign; by | B．signal; in | C．signal; by | D．sign; in |
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The police an organization which protects the public from harm .
| A．are | B．was | C．were | D．is |
Don't worry.We can the liar by the way he or she acts..
| A．think out | B．carry out | C．bring out | D．pick out |
——It's too hot today.Will it rai
n tomorrow?
——I would rather it tomorrow.
| A．would rain | B．rained | C．rain | D．will rain |
To be honest,the scientisttounknown to me.
| A．referring;being | B．referred;is |
| C．who referred;is | D．referred;being |
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