The bird was seen _____ off the tree.
A: fly
B: flys
C: to fly
D: flied
A: fly
B: flys
C: to fly
D: flied
举一反三
- They saw the bird flap its wings and ________ away. A: fly B: flied C: flew D: flying
- 中国大学MOOC: The bird was seen _____ off the tree.
- I __________________ to London tomorrow. A: fly B: was flying C: am going to fly D: flied
- 下列代码中的“this”指的是（）。 A: bird B: fly C: bird或fly D: 不一定
- ______bird can fly A: A B: An C: /