He ______ trees in his garden just now.
题型:选择题
问题:
He ______ trees in his garden just now. [ ]
A. was seen planting
B. was seen plant
C. is seen to plant
D. has been seen to plant
He ______ trees in his garden just now. [ ]
A. was seen planting
B. was seen plant
C. is seen to plant
D. has been seen to plant