Modal Verbs: Expressing possibility

 

Complete the sentences below with an appropiate infinitive: present or past, simple or continuous. Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. Note that you will lose points if you ask for hints!

1.
I wonder why Alan didn't buy me anything for my bithday. I suppose he might (1) (forget). or he might (2) (think) that now I'm getting on, I don't like to be reminded of my advancing years. On the other hand, he may (3) (forget)! he might (4) (give) me a present this evening when I see him. Oh, no! He could (5) (plan) a surprise party like last year. What a disaster that was! I hope he's not doing it again!

2.
We haven't seen our cat since yesterday morning. I can't help thinking that she might (6) (be run over). Or a dog could (7) (frighten) her. She may (8) (hide) in someone's garden shed. She might not (9) (be able) to get out! But then cats do wander off sometimes. She may (10) (be) fine and someone could (11) (feed) her now - in which case she may not (12) (be) in a hurry to come home.

3.
I wonder why Heather has bought all these cakes and biscuits? I suppose there could (13) (be) a special offer on at the supermarket. Or she might (14) (have) friends round for tea this afternoon. Come to think of it, some times she does some shopping for old Dorothy next door, so they may not all (15) (be) for Heather. She might (16) (buy) some for Dorothy.

 

From New Headway Advanced Workbook