I'm not sure when the flight takes off.You ___look up the in

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I'm not sure when the flight takes off.You ___look up the information on the Internet to make sure
of it.A.may B.have to C.must D.might 选什么,为什么?

A吧
may可以表示可以选择在网上查看信息；
have to(客观必须)/must（主观必须）都是表示必须,确定航班不一定非得上网查看,太绝对了；might是may的过去时,这里不是过去时态的句子.

I'm not sure when the flight takes off.You ___look up the in You should () when the plane takes off do you know when flight takes off?i was told it __at 3 Awill Will you be back ____five in the afternoon?---I'm not sure,m I'm not sure if you will succeed in the exam.的句子成分英语翻译I'm not sure when I first fell in love with you...I gues 英文翻译要手写的"m not sure when I first fell in love with you... I I'm not sure when I first fell in love with you . I'm not sure when the train will arrive,I'm afraid.It___be l 英语翻译I'm sure you'll succed in the future? what the meaning of"I'm not sure I am up for this" 1.I'm sure he will jump UP when he _____ the good news A.lea