【正文】
I bought last month has gone wrong. 11. the golden rule/ age 12. switch on / switch off 13. pretend to do sth. When mother came back home, he pretended to be asleep. We mustn’t pretend to know what we don’t know. He pretended that he had a headache. 14. keep sth. Under lock and key 15. brightly colored pills 16. colored / colorful 17. mistake A for B He often mistakes wheat for rice. She is often mistaken for her twin sister. 18. admit admit sth./ admit doing sth. / admit / that…… .. He admitted his mistakes. He admitted having made the mistake. He admitted that he had made the mistake. admit … .. into They have admitted me into their club. He has been admitted into Fudan University. 19. A great / large /go