_____is important to a person is ____he must know what he is fit for.
 A It ; that         B. As; that        C. What; that      D. That ; what
Lots of coal miners died on the job last year, ______ the government to shut nearly 800 small mines in Shanxi Province alone.
| A.having forced | B.to force | C.forced | D.forcing | 
The boy has _____ a fine knowledge of geography by careful study.
| A.required | B.inquired | C.acquired | D.addressed | 
The policeman told me that I had passed the driving test and never in my life _______ so happy and excited.
| A.I felt | B.did I feel | C.I had felt | D.had I felt | 
Having paid off all their ____, the Smiths are now ____ financial problems.
| A.debts; free of | B.money; free of | C.debts; free from | D.money; free for | 
—How much of the foreign expert’s speech have you understood?
 —Next to nothing. I wish I _______ harder at English.
| A.worked | B.had worked | C.would work | D.were working |