A．amountB．numberC．sumD．total……

单项选择题Normally a student would at least attend ______ classes each week.

单项选择题America university students are usually under pressure of work because _______.

单项选择题The major point discussed in the passage is _______.

单项选择题The writer seems to think that the teacher's judgment on that sensitive piece of writing is______.

单项选择题Teachers differ in their opinions about ______.