The Canadian dollar strengthened against the greenback on Monday, and the yield on benchmark government debt slipped. The loonie was trading 0% higher at C$1.3533 to the greenback, or 73.89 U.S. cents, after trading in a range of 1.3524 to 1.3567. Canadian government 10-year bond yields fell 1.6 basis points to 2.923%. The yield on similar U.S. government benchmark debt fell to 3.5261%. U.S. June crude futures fell 79 cents to $77.08 a barrel on Monday..