You never know how much difficulty we had ______the problem. Luckily, we managed to solve it with Mrs Wu’s help.
Where ______ his jacket ? ______ on the bed..
______bag is red and ______ is red, too.
Is this ____ruler? Yes, it is. It's .
Circus clowns are popular with children because they can .
A is the busiest but the happiest man on his wedding day.