to connect or coordinate with something else
mit etwas anderem verbinden oder koordinieren (mit etwas anderem verbinden oder koordinieren)
"The workshop topics tie in with our current curriculum."
"Die Themen des Workshops passen zu unserem aktuellen Lehrplan." (Die Themen des Workshops **passen zu** unserem aktuellen Lehrplan.)
to be extremely happy
someone appears active but is not thinking clearly
to monitor someone or something closely
to show total indifference
feeling cheerful and happy
to make a great effort to help or please someone