1. Nick couldn't get in because he had lost his key.
2. Tom couldn't buy a pen because he had spent all his money.
3. Ben felt ill because he had eaten much ice- cream .
4. Granny couldn't read the letter because she had broken her glasses.
5 . Jane couldn't go out because she haad not done her homowork.
6. Ted got a bad mark because he had not learnt the poem.
7. Kate couldn't make the cake, because she had not bought flour.