MODAL PERFECT XIIS3

It is possible that I (be) mistaken.

• could have been

• might have been

• must have been

• might be

I sat on a seat in the park and now my coat is covered in green stripes. The paint (be) wet.

• might be

• must be

• might have been

• must have been

I suppose it was Charles who left the kitchen in such a mess. No, it (not be) Charles. He never has a meal in. It (be) Bill.

• Might not have been, Must be

• Must not have been, Must have been

• Could not be, Might have been

• Could not have been, Must have been

I know she was in because I heard her radio but she didn't open the door. Possibly she (not hear) the bell.

• should not have heard

• must not have heard

• may not have heard

• need not have heard

If they had gone any further they (fall) over a precipice.

• Would have fallen

• Would fall

• Should have fallen

• Should fall

He (check) that his brakes were working properly but he didn't.

• Must have checked

• Might have checked

• Could have checked

• Would have checked

I can't think why they didn't try to help him. It is possible that they (not realize) that he was drowned.

• Must not have realize

• Might not have realized

• Might have not realized

• Must have not realize

It is a pity you (bring) your kite. It is just the day for kites.

• Should have brought

• Must have brought

• Could have brought

• May have brought

To someone who was not at the party: 'We had a wonderful time; you (be) there'.

• Must have been

• Might have been

• Should have been

• Could have been

As soon as I switched on my new electric cooker there was an explosion. There (be) something wrong with it.

• Must have been

• May have been

• Should have been

• Could have been