【题目】It's polite to avoid making noise ______ you 're eating.

【题目】Wait a moment! He ______ the piano in the room.

【题目】Tom looks happy because he ______ well in the English exam.

【题目】Bill is always ______, and he is willing to do shopping for the olds.

【题目】Lucy has won No. 1 in the 100-meter run, and she hopes to break her own ______ next year.

【题目】Reading in bed is bad ______ your eyes.

【题目】Bruce ______ watches TV or listens to the radio, so he knows nothing about it.

【题目】In order to keep healthy, we should eat ______ vegetables and ______ meat.

【题目】According to the report, ______ half of the students sleep late at weekends.

【题目】This year _____ number of students in my school _______ 1,200.