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【华慧考博】考博英语每日一练（10.31）考博加油！
1. During our first teacher training year, we often visited local schools for the ______ of lessons.
A. observation
B. investigation
C. inspection
D. examination
2. He claims to be an expert in astronomy, but in actual fact he is quite ignorant on the subject. ______ he knows about it is out of date and inaccurate.
A. What little
B. So much
C. How much
D. So little
【考博英语句子改错】
Ensuring an adequate water supply have been a concern ever since people began to live in towns and cities.
