Fil in: was/were able to, could(n't), had been able to, should be able to or can
2.on entering the house i ................smell something burning in the kitchen.
3. if you work quickly,you...........finish on time.
4. ann.............read by now:she's already six.
5.when we lived on the coast,we.............swim in the sea every day.
6. if gordon................find his way out of the jungle, he would have survived.
7.last week he............arrange a meeting with the prime minister.
8. i'm not usually very good at tennis, but yesterday i ...........beat my brother.
9.tom ..........................finish this this today ,shouldn't he?
10.He ...............fix the tap so he called a plumber.