Who______ it be that is knocking at the door?—It ______ be Father,but I’m not sure.A.can; must B.can; may C.must; can D.may; must

—Who______ it be that is knocking at the door?—I—Who______ it be that is knocking at the door?—It ______ be Father,but I’m not sure.A.can; must B.can; may 　C.must; can 　D.may; must Who______ it be that is knocking at the door?—It ______ be Father,but I’m not sure.A.can; must B.can; may C.must; can D.may; must Who______(wear)a blue dress?That's Ann Who______(wear)a blue dress last night?That's Ann be that as it be that as it It can be argued that... How can it be that? it will be recalled that may it be known that Who______(be) the so-called guests invented to your party last night? That it will be like that it does not know... 根据汉语提示填出合适的情态动词(包括否定形式)1、who______(可能）it be at the door?2、you_____ ______ _______(不必）leave so early.3、you_____ ______(必须）tell everyone the result.4、bikes________(不准）be parked h It seems to be popular that sb. IT CAN`T BE THAT TIME 急 be that as it may是什么意思 It can be said with certainty that it may be case that啥意思