2. 职称英语
  3. Only five years ago, there ______a shortage of computer specialists.A、wasB、were

Only five years ago, there ______a shortage of computer specialists.A、wasB、were

游客2025-06-19  0
问题 Only five years ago, there ______a shortage of computer specialists.
选项 A、was
B、were
C、has been
D、have been
答案 A
解析 The simple past tense is required. Choice (B) is past tense but does not agree with the singular subject shortage. Choice (C) is present perfect. Choice (D) is present perfect and does not agree with shortage.  
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