外研版（2019）必修第二册Unit 2 Let'scelebrate！ 课后检测Starting out & Understanding ideas

a. happening, coming or done repeatedly at times or places which are the same distance apart

b. a flat paper case for a letter or document, with a part that you stick down to close it before you write an address on it and send it through the mail

c. written artistic works, particularly those with a high and lasting artistic value

d. to show great respect for sb. / sth.

e. to say that something is wrong or not satisfactory

f. a long printed story about imaginary characters and events

g. the crops which are cut and collected

h. a large imaginary animal, usually represented with wings, a long tail and fire coming out of its mouth

i. to express your choice or opinion, especially by officially marking a paper or by raising your hand or speaking in a meeting

j. to take part or become involved in an activity