if your call is not answered within two minutes, you ___ to

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if your call is not answered within two minutes, you ___ to hang up and dial again.
A would be advised B are advised
the answer is B,why not chose A?

这里不用虚拟语气,只是对将来来情况的假设,事情完全有可能发生.所以不选A.
选择B,是因为别人现在就建议你、给出你建议------即你被建议,如果将来你的电话没有被回答你应该咋办

if your call is not answered within two minutes, you ___ to 英语翻译（）you （）to （）（）your homework within 20 minutes? If you are not healthy,you have to ___.A.help your mom B.go I am not sure if Tom ____ home.If he ___,I will call you. Can you explain the problem to me?It's not within my ___ It is ______(可能) for you to finish the work within two days. If your eyesight is not very good ,you can use it to see thi i if you were offered a job that is not related to your majo 同义句转换Even if you are with your friends,it is better not to s if you were offered a job that is not related to your major If your eyesight is not very good,you can use it to srr thin 英语翻译If there is enough strength left within you to survive,；