When I was five I....swim. Could Can Was able.
People......... drink and drive cars. It is forbidden. Have to Must Mustn't.
It's not obligatory to take a tie. You ........................wear one. Don't have to Mustn't.
Tomorrow is a holiday, my children..............get up early. Don't have to Should Don't has to.
Excuse me!.......you speak English? Be able Will be able you Can.
Silvia ............her grandmother yesterday. She is old and sick. Should have visit Should have visited Should has visited.
He says he ......finish his homework by tomorrow. Must Had to Will must.
The concert was fantastic. You really.............come. Must have Should have Can't have.
He .........known it was your birthday. Otherwise, I'm sure he would have wished you a happy day. Mustn't have Can't have.
......you help me, Mary?. I can't do it alone. Will be able Can Were able.
Clara was very upset with you yesterday. You..............apologised for saying she was lazy. Should have Must have Can't have.
Did they escape from the fire?. Yes, they.....to escape. Could Will be able Were able.
You............... tried to fix the roof yourself. You might have fallen off and been badly injured. Shouldn't have Might have Must have.
You.....pay now. Pay tomorrow. Have to Don't have to Mustn't to.
You will......give it to me! Have to Have Must.
Boys, you....do those things. Hasn't Haven't that Mustn't.
............I use your phone? Must May Have to.
This .......be the right answer but you'll have to check with your teacher to make sure. Could Must.
Slow down or we're going to have an accident. You............drive so fast. Shouldn't Should Ought to.
........to finish it in time? Could you Can you Will you be able.
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