Sam _____ some knowledge of the computer just by watching others working on it.
A. picked up B. looked up
C. brought up D. set up
I like the music _____ he danced yesterday, which was composed by a famous musician.
A. with which B. against which
C. to which D. to that
The palace caught fire three times in the last century, and little of the original building _____ now.
A. is remaining B. remains
C. has been remained D. is remained
Mum pretended ________ what happened yesterday at school, but in fact, she has been told about every detail.
A．not to hear about
B．
not to have heard about
C．not to be hearing about
D．to not hear about
If you miss this chance, it may be years __________ you get another one.
A. after B. when C. before D. since
书面表达
学校图书馆需要购置一批新书， 现向学生征求意见。假如你是李华，你认为学校图书馆最需要购置科普类图书（popular science books）和文学类图书（literary books）。请你用英语给图书馆王老师写一封100词左右的信，推荐这两类书，并分别说明推荐理由。
注意：信的抬头与落款已给出（不计入词数）。
Dear Mr. Wang,
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
Yours sincerely,
Li Hua
