The football match was really fantastic， _______ when Smith scored in the last minute.

Who should be responsible for the accident— The boss, not the workers. They just carried outthe order _______.

Can you sing the song “ The Little Apple”—-Of course ! _______my parents _________I are able to sing it well.

______ the houses were knocked down in the earthquake.

We have done a lot to make our city cleaner, but it’s still not enough.– So we should do ________ to improve it.