21、Parents make many         for their children, which in turn creates children’s further emotional dependence on them.

A．criteria      B．sacrifices         C．assessments     D．regulations

20、I believe Shackleton           this unexpected end to his expedition, but he did not waste time on regrets.

A．must have mourned                                    B．must mourn

C．can have mourned                                      D．could mourn

19、Where were you at lunch time? I          a seat for you in the dining hall.

A．saved              B．was saving       C．have saved       D．had saved

18、The human body is composed of organs, each           a definite job to do.

A．have                B．to have            C．has           D．having

17、Is there a magic cutoff period          children become responsible for their own actions?

A．that          B．on which         C．which      D．when

16、He is a good leader who always thinks more of the public than of himself,        we should follow the example of.

A．which       B．one    C．the one     D．whoever

15、Following Christianity, witnesses have to        on the Bible to tell the truth.

A．swear       B．advocate          C．plot          D．register

14、--- Flight 302 to London         until 7:30 tomorrow morning.

--- No wonder I hear so many complaints from the passengers.

A．has been delayed                                         B．delay

C．delayed                                                      D．will be delayed

13、Put a tie on – it’ll make you look more          .

A．respected         B．respective        C．respectable       D．respectful