Fill in the gaps in the sentences.

{"q": "1. Sorry, I ____. cook tonight – I work late. But I ____ cook tomorrow, I promise.
2. I ____ phone Anne last night, but I ____ call her this evening.
3. I’m sorry I ____ come to the meeting yesterday. My son was ill so I ____ stay at home.
4. I’m really sorry, but I ____ come and see you tomorrow because I ____ study for my exam.
5. I ____ go to the wedding last weekend because ____ I go to a conference.
6. Terry ____ come for dinner tonight. He ____ fly to Rome on business yesterday evening, but he ____ phone you when he gets back.", "a": "1. can’t / will
2. couldn’t / ‘ll
3. couldn’t / had to
4. can’t / have to
5. couldn’t / had to
6. can’t / had to / will"}