问题详情:
-Is Jack in the next room?
-Well, it’s hard to say. But I heard him ______ at 5 o’clock.
A. sing B. to sing C. sang D. singing
【回答】
D
知识点:动词和动词短语
题型:选择题
问题详情:
-Is Jack in the next room?
-Well, it’s hard to say. But I heard him ______ at 5 o’clock.
A. sing B. to sing C. sang D. singing
【回答】
D
知识点:动词和动词短语
题型:选择题