It’s not always necessary to look up the words ________ the dictionary while reading. Sometimes we need to guess. 

Don’t complain ________ your neighbors. You’d better get on well with them.

— Look, the old man is walking slowly in the middle of the street. It’s too dangerous.— You’re right. Let’s go and help him go ______ the street.

Alice is in the music club. She is good _______ singing.

My family always have a party ______ the evening of October 1, and the party starts ______ 8. 00 p. m.