29. In this factory, it' s hard to tell cadres workers.
A. from B. to C. about
28. We waited for the bus.
A. for long time B. a long time C. some long time
27. He is thin.
A. fairly B. rather C. little
26. My father me to become a doctor.
A. thinks B. says C. hopes
25. We a spare-time study group last week.
A. set up B. put up C. have established
24. We must the importance of the four modernizations.
A. learn by heart B. keep in mind C. know by heart
23. I need a day or two .
A. to think it over B. to think over it C. of thinking
22. When did you my letter?
A. receive B. accept C. got
21. I' ve heard him about you often.
A. spoke B. speaks C. speak
20. The poor peasants all had a life before liberation.
A. suffered B. cruel C. bitter