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 _____ took me almost 20 years to have the courage to ask my father this personal question.

A. This                              B. It                                C. That                  D. One

 Since he often travels on business, he can ______ himself to sleeping in any place he can find.

A. devote                  B. accustom                 C. force             D. reduce

 He was allowed to go swimming _______ he kept near the other boys.

A. on condition that         B. as far as                          C. even if                          D. as though

 It was after he got what he had desired_____ he realized it was not so important.

A. that              B. when             C. as                           D. since

 But for friction (摩擦力), people ______ neither walk, nor even stand up.

A. can                                        B. were able to      C. will be able to                   D. could

 The troops _______ themselves to go into battle.

A. prepared                         B. were prepared               C. to prepare                       D. preparing

 I can’t buy ________that one.

A. as good a book as                                      B. as a good book as  

C. such good book                               D. so good book as

She loved her husband _________the fact that he is addicted to smoking.

A. due to                                           B. as                                     C. despite                          D. though

 He is opposed to such a view that it is his intelligence and good luck that have ________ his success.

A. contributed in              B. led to                             C. come out                    D. resulted from

 It is important to have your eyes examined regularly to check for any sign of eye disease that may not have any ________.

A. shadow                                    B. similarity              C. sample                          D. symptom