题目内容
The captain kept on ________ these words over and over.
[ ]
A.
repeat
B.
to repeat
C.
repeated
D.
repeating
答案:D
解析:
解析:
|
keep on继续,后接动名词,所以选择D项。 |
练习册系列答案
相关题目
题目内容
The captain kept on ________ these words over and over.
repeat
to repeat
repeated
repeating
|
keep on继续,后接动名词,所以选择D项。 |