The police still haven' t found her, but they' re doing all they（）

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Yes, I have Yes, I do No, I haven’t No, I don’t

can may must should

No，I don’t　 No，I haven’t Yes，I do　 Yes，I have

has lost;don’t find is missing;don’t find has lost;haven’t found is missing;haven’t found

can may must should

has lost; don't find is missing; don't find has lost; haven't found is missing; haven't found

got lost；don’t find is missing；don’t find have got lost；haven’t found is missing；haven’t found

has lost; don’t find is missing don’t find has lost; haven’t found is missing; haven’t found

has lost ,don’t find is missing, don’t find has lost, haven’t found is missing , haven’t found

has lost; don’t find is missing; don’t find has lost; haven’t found is missing; haven’t found

has been going on; haven’t reacheD. has been going on; haven’t been reacheD. was going on; haven’t reached was going on; haven’t been reached

shall would must can

Yes，they have No，they haven’t Yes，they haven’t No，they have

has lost; don't find is missing; don't find has lost; haven't found is missing; haven't found

is missing; haven't found is missing; don't find has lost; haven't found is lost; don't find

has lost; don’t find is missing; don’t find has lost; haven’t found is missing; haven’t found

has lost, don’t find is missing, don’t find has lost, haven’t found is missing, haven’t found

Yes, I have Yes, I do No, I haven’t No, I don’t

may can must will