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(每日一练)人教版 2022 年高中现在完成时基础知识题库
单选题
1、Increased light pollution globally means that the starry nights that once inspired artist such as Vincent van Gogh
________ much more difficult to observe over the past century.
A．becomeB．have becomeC．becameD．are becoming
答案：B
解析：
考查动词时态。句意：全球光污染的加剧意味着，曾经激发梵高等艺术家灵感的繁星之夜，在过去的一个世纪
里变得越来越难以观测。根据时间状语“over the past century”可知，此处应用现在完成时。其基本构成形式是：
have/has done。故选 B。
2、He ________ for ten years but still doesn’t want to leave office.
A．has been in powerB．has ...
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