---- Why didn’t you try your best to stop him from doing so?

----I tried to, but ____ I could, the policemen turned up.

A. until            B. when           C. before        D. after      

There is a(an)  ____  that more graduates choose teaching as their permanent careers.

A. direction        B. attraction       C. tendency      D. attempt     

The coach asked his staff to ____ the large group of journalists waiting for him to announce his training plans.

A. adapt to         B. attend to       C. refer to        D. appeal to   

In 1994, China began collecting income tax from people earning more than 800 per month, but only 1% people earning more than ____.

A. that            B. it              C. those         D. one               

The Chinese yuan rose to a new high ____ the US dollar on Monday, China Daily has reported.

A. with            B. of             C. for           D. against          

In the office, I never seem to have time until 5:30 p.m.，___ many people have got home.

A. whose           B. where          C. on which      D. by which       

---- Was Martin sorry for what he had done?

----____. It was just like him.

A. Never mind     B. All right       C. Not really     D. Not surprisingly   

---- Oh! You bumped me!

---- I am sorry, but I ____ to catch the coming bus.

A. try           B. tried           C. am trying     D. was trying    

If we can ____ our present difficulties, then everything should be all right.

A. get over        B. come over      C. come across   D. get off  

----Has your father returned from Africa yet?

----Yes, but he ____ here for only three days before his company sent him to Japan.

A. was             B. has been            C. will be        D. would be