Question

As everyone knows, rubbish _______ everywhere.

A．need be thrown	B．mustn’t be thrown
C．can’t throw	D．may throw

Answer 1

B

動(dòng)詞語態(tài)。。垃圾rubbish和throw為被動(dòng)關(guān)系，應(yīng)用被動(dòng)語態(tài)。排除C和D。句意為“每人都知道的，到處都禁止扔垃圾”。Mustn’t表禁止。故選B。