Please register or log in.
If you're a new user
If you're a returning user
Oops, something went wrong!
using the past modals to show degrees of certainty
by using the form of ( must have V3) to show that the action was almost certain .
( could/might/ may have V3) to s how that it is possible
( couldn't have V3) to show that it is not possible
Upload date: 2013-05-06 11:56:27