The police are looking for a missing boy who is believed ______ a white pullover and blue jeans.
It is the first time that I _______ this kind of moon cake.
_____ catch the first bus, he got up very early this morning.
It was because of bad weather _____ the football match had to be put off.
There was ______ time _____ Chinese used foreign oil.
--- Mary’s got crazy and has been sent to the mental hospital. Did you tell her boss about that?--- Yes, but I _____ her husband first.