Only by seizing every possible_____ to practice can you possibly hope to improve your spoken English.

5. In our class, when the bell rang and the taacher closed his book, it was a        or everyone to stand up.

25．There is an obvious __________ between the cultures of the West and East.

According to the new government plans, peasants’ children have equal     to schooling.

After three months, these young students finally became used to the ______ of life in a big city abroad.