A warm welcome ______ to the American guests at the airport tomorrow morning.
______ regular exercise is very important, it is never a good idea to exercise too close to bedtime..
No matter how bright a talker you are, there are times when it is better ______ silent.
There is ______ in our office that when it is somebody’s birthday, they bring in a cake for us all to share.
Mr. Smith ______ a grammar book meant for senior high school students and will almost finish it.
—I’m just going to finish the work off first. —Go on if you _______.