By, children play tricks on April's Day.

A. location
B. treat
C. trade
D. tradition

A number of were taken to solve this problem.

A. meaning
B. measures
C. meant
D. measurement

Everyone and clapped as the football team came on to the field.

A. cheerful
B. cheered
C. cheering
D. chear

habit importance electric involve recent tradition celebratemeasure cheerThe good news got _______ from the audience.

habit importance electric involve recent tradition celebratemeasure cheerThese factories will take every possible ________ to reduce pollution (减少污染).

habit importance electric involve recent tradition celebratemeasure cheerWaterfalls (瀑布) can be used to produce _______ power.

habit importance electric involve recent tradition celebratemeasure cheerCan you come to the party to ________ Jim's graduation?

habit importance electric involve recent tradition celebratemeasure cheerIt's a(n) _________ to sing “Jingle Bells” at Christmas.

habit importance electric involve recent tradition celebratemeasure cheerThese classes help members learn how to change their eating ______.

habit importance electric involve recent tradition celebratemeasure cheerIn some way, he ________ several of his friends in the trouble.