. It is usually warm in my hometown in March, but it be rather cold sometimes. A
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. It is usually warm in my hometown in March, but it _________ be rather cold sometimes.
A. must B. can
C. should D. would
试题答案
B。
解析:
can表示推测时通常只用于否定句或疑问句，很少用于肯定句。但有两种情况是例外（即可用于肯定句）：一是表示纯理论上的可能性，二是表示“有时”，如：Even experienced teachers can make mistakes. 即使是有经验的教师也可能出错。She can be very unpleasant. 她有时很令人讨厌。