Letterboxes are much more ________ in the UK than in the US, where most people have a mailbox instead. [ ]

Whatdoyouthinkofteaching, Bob？ —Ifinditfunandchallenging.Itisajob___youaredoingsomethingseriousbutinteresting

Mr. Black ________ for Shanghai in a few days. Do youknow when the earliest plane ________ on Sunday

._______________ you have finished your work,you might as well relax yourself now

ore and more tourists invading, lots of placesof interest require ______.