書名：疾天閱讀滿分2 1000題
版本：2017.2再刷 實測01
頁數：p.22~26
題目：
>>第1題<since用在過去完成>
Guest will be allowed to enter the venue two hours ____ the performance starts.
(B)before
(D)since
疑問：答案為B，甚麼時候才用since ?
>>第18題 <正確答案為D，之前對錯答案>
Operating the up-to-date equipment at the factory demands a high level of
technical ____.
(C)facility
(D)expertise
疑問：沒事了
>>第19題<正確答案為C，之前對錯答案>
For being the worker who ____ most positively, Eliza received a small cash
bomus.
(B)have evaluated
(C)was evaluated
疑問：沒事了
>>第35題<specialize +in 特殊用法>
The city's public healthcare workers ____ in providing treatment for the
elderly.
(C)specialize
(D)guarantee
疑問：答案為C，為何D不行?
>>第41題<非分詞構句(動詞只有一個)也非關係代名詞(不會有逗點)，逗點後直接加過
去式動詞(禮拜一)>
June 8 - At a press conference on Monday, Amanda Doolittle, the event director
for Blackridge County Fair, ____ that pop sensation Max Avery will be giving
a perfomance on the final night of the fair.
(A)confirming
(C)confirmed
疑問：答案為C，為何不是A，逗點後面who confirmed省略who動詞加ing? 還有再問一個
這個時候逗點後要用關係代名詞，who指Amanda，which指Blackridge County Fair
，兩種用法都可以嗎?
共5題，煩請能人解