I don’t really work here; I ___ until the new secretary arrives.
The market competition is fierce, but our products have great advantage ______ quality and price.
A football suddenly flew over our head and it ______ missed hitting a child playing nearby.
I believe that the 21st century is one ______ China will become one of the most powerful economic countries.
–The new museum of art is an unusual ______.--But it is designed by a very young architect.
It’s natural that a man can hardly ______ a smile when he hears some good news.