They ______play the piano when they were young.(could/be able to)
A: could
B: were able to
C: was able to
D: could/were able to
A: could
B: were able to
C: was able to
D: could/were able to
举一反三
- They ______play the piano when they were young.(could/be able to)
- I _______________ swim a mile easily when I was a child. A: could B: were able to C: was able to D: could/was able to
- I ( ) send a text to my mum this morning. A: could B: was able to C: were able to
- But for friction, people _________ neither walk, nor even stand up. A: can B: were able C: will be able D: could
- I________speak a little English when I was four. A: am able to B: was able C: could be able D: could