Ex. 10. Give the third form of the following verbs. Mind the reading of the -ed ending!

to place, to have, to read, to introduce, to compose, to be, to find, to consist, to retrieve, to do, to receive, to make, to tell, to use, to think, to execute, to distribute, to consider, to move, to write, to give, to erase, to hear, to fall, to see, to go, to compare, to come, to search, to begin, to increase, to speak, to become, to reduce, to call, to take, to understand, to discuss, to control, to send, to draw, to attach, to know, to mean, to switch, to say, to obtain, to perform, to build.