A、Permit me to express these warm welcome and gracious greetings to our distinguished guests coming from afar.
B、Permit me/ to extend these warm welcome and gracious greetings to our distinguished guests coming from afar.
C、please allow me to extend these warm welcome and gracious greetings to our distinguished guests coming from afar.
D、please allow me to express hese warm welcome and gracious greetings to our distinguished guests coming from afar.