Ex.1 fill in: can, can’t, could, couldn’t, was/wasn’t able to or had been able to.
1 he run much faster when he was younger.
2 on entering the house, something burning in the kitchen.
3 i’m busy today, so shopping with you.
4 i heard brian’s voice, but him until i turned on the lights.
5 when i lived on the coast, in the sea every day.
6 if gordon the rush hour traffic, he would have arrived at the party on time.
7 i’m not usually very good at tennis, but yesterday my brother in a match.
8 i had my hands full, so the door.
9 angela is very clever. four languages.

1. He could run much faster when he was younger.

2 Upon entering the house, she could smell something burning in the kitchen.

3 I’m busy today, so I can't go shopping with you.

4 I heard Brian’s voice, but I wasn't able to see him until I turned on the lights.

5 When I lived on the coast, I was able to swim in the sea every day.

6 If Gordon had been able to avoid the rush hour traffic, he would have arrived at the party on time.

7 I’m not usually very good at tennis, but yesterday I was able to beat my brother in a match.

8 I had my hands full, so I couldn't open the door.

9 Angela is very clever. She can speak four languages.