1 C Sen

'What time will you be home tonight?' I'm not sure. I ........ late.

• may be

• might be

• can be

I can't fins the theatre tickets. They ............ out of my pocket.

• must have fallen

• should have fallen

• had to fall

I ........... out but I did't feel like it, so I stayed at home.

• could go

• could have gone

• must have gone

I'm sorry I ............ come to your party last week.

• couldn't come

• couldn't have come

• wasn't able to come

'What do you think of my theory?' 'I'm not sure. You .......... right.'

• could be

• must be

• might be

I couldn't wait for you any longer. I ...................., and so I went.

• must go

• must have gone

• had to go

'Do you know where Sarah is?' ' No. I suppose she ................. shopping.'

• should have gone

• may have gone

• could have gone

I promised I'd call Gary this evening. I ........................... .

• mustn't forget

• needn't forget

• don't have to forget

Don't phone them now. They .............. lunch.

• might have

• might be having

• must be having

I wonder why Tom didn't phone me. He ................... .

• must forget

• could forget

• must have forgotten