新课程实践与探究丛书九年级英语人教版
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一、单项选择
( )1. The teacher told us ______ attention ______ the lab clean.
A. to pay; to keep B. to pay; to keeping
C. pay; to keeping D. to paying; to keeping
答案：B
解析：tell sb to do sth“告诉某人做某事”，pay attention to doing sth“注意做某事”，to为介词，后接动名词keeping，故选B。
( )2. It's very convenient ______ us to buy train tickets now because we can buy them either from the station or on the Internet.
A. to B. of C. by D. for
答案：D
解析：“It's convenient for sb to do sth”表示“对某人来说做某事是方便的”，for符合句型，故选D。
( )3. Good learners often ask ______ because they know knowledge comes from ______.
A. question; question B. questions; questions
C. questions; questioning D. questioning; questioning
答案：C
解析：ask questions“问问题”（名词复数），come from questioning“来自提问”（动名词），故选C。
