Jane and I are close friends and I ______ her for almost thirty years.
A. have known
B. am knowing
C. knew
D. know
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The visitors are now driving past the houses ______ were described in the famous novel Gone With the Wind.
A. what
B. when
C. which
D. why
The book arrived on time, and it was the teacher ______ delivered itto me.
A. who
B. which
C. whom
D. when
在第三次加冠的帽子叫()。
A. 皮弁
B. 爵弁
C. 纱弁
D. 弁冕
______ in real estate is no longer as safe as it used to be five yearsago.
A. To be invested
Being invested
C. Invest
D. Investing