Ian says the children had better/ought stop playing so many video games.

Billy couldn’t climb up the 6-metre pole. Billy ................................ climb up the 6-metre pole. ABLE

It’s not possible that you have lost your keys. You ................................ lost your keys. HAVE

Did your mother usually bake a birthday cake for you? Did your mother ................................ a birthday cake for you? USE

She had been living in the house already/for five years before she saw the ghost.

Her father always said that he could build a time machine. Her father ................................ that he could build a time machine. USED

You only bruised your arm; it could have been/had to be a lot worse.

All members are able to/must obey the club rules.

The coach did all he could to help the players win the game. The coach ................................ more to help the players win the game. COULD

Where’s John? He must have/ought to have forgotten about today’s training session.

Mum ... the house all day and she looked exhausted. A had been clean B cleaned C had been cleaning D had cleaned

There was no need to worry about the race because we won easily. You ................................ about the race because we won easily. NEEDN'T