1.Mary ____ my letter; otherwise she would have replied before now .

1.Mary ____ my letter; otherwise she would have replied before now .
A has received B ought to have received C couldn’t have received D should to have received
2.From tears in Nedra’s eyes we can deduce that something sad _____ .
A must have occurred B would have occurred C might be occurring D should occur
3.The millions of calculations involved ,had they been done that by hand ,____ all practical value by the time they were finished .
A could lose B would have lost C might lose D ought to have lost
4.My pain ___ apparent the moment I walked into the room ,for the first man I met asked sympathetically ,”Are you feeling all right?”
A must be B had been C must have been D had to be
5.You ___ all these parcels yourself .The shop would have delivered them if you had asked a shop assistant .
A didn’t need to carry B needn’t have carried C needn’t carry D didn’t need carry