2. 外语
  3. If you want to do well on the exam, you______on the directions that the professor gives and take exact notes.

If you want to do well on the exam, you______on the directions that the professor gives and take exact notes.

admin2011-04-21  41
问题 If you want to do well on the exam, you______on the directions that the professor gives and take exact notes.
选项 A、will have concentrated
B、have to concentrate
C、will be concentrated
D、will be concentrating
答案B
解析 此句子是一般现在时，所以用一般现在时态，不用虚拟语气。应选择B。
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