If only he (can) find some other dogs and fight with them, he (to think) that the day (not to be lost). to look at montmorency,you might think that he (to be) an angel that (to be sent) upon the earth.

If only he could find some other dogs and fight with them, he would think that the day had not been lost. To look at Montmorency, you might think that he is an angel that has been sent upon the earth.