Put in ''can'',''can't'',''could'',''couldn't''.If none is possible,use''be able to''in the correct tense:
1.--------you swim when you were 10?
2.We -------get to the meeting on time yesterday because the train was delayed by one hour.
3.He ---------arrive at the party on time,even after missing the train,so he was very pleased.
4.He's amazing,he-----speak 5 languages including Chinese.
5.I ---------drive a car until I was 34,then I moved to the countryside so I had to learn.
6.I looked everywhere for my glasses but I..........find them anywhere.
7.I searched for your house for ages,luckily I..........find it in the end.
8.She's 7 years old but she........read yet-her parents are getting her extra lessons.
9.I read the book three times but I........understand it.
10.James.......speak Japanese when he lived in Japan,but he's forgotten most of it now.