Walking down the street, she noticed a long _____ of houses, all exactly alike.

You've missed your ____， and you will have to wait for the next round. 

—Hi,Magarette! You are in perfect        .—I always do exercise to keep fit.

Jack is not very decisive, and he always finds himself in a ________ as if he doesn’t know what he really wants to do．

The _____ stuck on the outside of the envelope said "By Air".