David arrived at the meeting____at ten o’clock,as it was scheduled,not a minute early or late.

A.     flexibly  B.temporarily  C.approximately  D.punctually

David arrived at the meeting____at ten o’clock,as it was scheduled,not a minute early or late.

A.     flexibly  B.temporarily  C.approximately  D.punctually

David arrived at the meeting          at ten o’clock, as it was scheduled, not a minute early or late.

A．flexibly     B．temporarily       C．approximately   D．punctually