With all my attention _______ my homewor
题型:选择题
问题:
With all my attention _______ my homework, I didn’t even notice my father standing by me.
A.to fix on
B.fixed on
C.fixing on
D.to be fixed on
With all my attention _______ my homework, I didn’t even notice my father standing by me.
A.to fix on
B.fixed on
C.fixing on
D.to be fixed on