英文文法-不定詞請益2013/1/3 - 考試

不好意思,小弟才疏學淺，想請教各位大大幾題英文文法試題(出處:王怡華-文法練習1000
題)

1.She does not know------to open it with.
(A)how (B)what (C)who (D)whether
答案:(B),我想了解為何不可選(A)=>如何打開它..

2.I never know----when I go on a trip.
(A)what clothes should be take
(B)what clothes to take
(C)wHAT clothes will I take
(D)I take what clothes
答案:(B),我想了解為何不可選(A)


3.Pragmatists were hardly the first men------beliefs control behavior.
(A)insist (B)insisted (C)who insists (D)to insist
答案:(D),不明白其它選項那裡錯?


4.I muttered encouraging words to myself----- up my courage.
(A)to keep (B)being kept (C)keeping (D)to have kept
答案:(A),不明白其它選項那裡錯?

謝謝~~

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