6. Complete using the correct form of the verb:

-Those young men _______ (run) nearly two miles. They ______ (run) for ten minutes.

-Since tea time Elaine ______ (do) sums in her exercise book. She ______ (do) fifty.

-You ______ (drink) tea all day. You
______ (drink) at least ten cups.

-Simon ______ (deliver) about two hundred newspapers. He ______(deliver) them since early this morning.

-Bob and his friends ______ (play) ten holes.

-Helen ______ (tell) me you are seriously ill. Why didn't you tell me yourself.

-Our company ______ (double) its turnover over the past six months​