题目内容
16、The boy was busy doing his homework, only _______ once in a while to look out of the window．
A．stopping B．to stop C．stopped D．having stopped
试题答案
16、A
The boy was busy doing his homework, only ____ once in a while to look out of the window.
A. stopping B. to stop C. stopped D. having stopped
查看习题详情和答案>>27. The boy was busy doing his homework, only_____once in a while to look out of the window.
A. stopping B. to stop C. stopped D. having stopped
查看习题详情和答案>>The boy was busy doing his homework, only _______ once in a while to look out of the window．
A．stopping B．to stop C．stopped D．having stopped
查看习题详情和答案>>
27. The boy was busy doing his homework, only_____once in a while to look out of the window.
| A．stopping | B．to stop | C．stopped | D．having stopped |