Past Modals for speculation and / or deduction

She ____________ said that to him! She never swears.

I left my bicycle in front of the library, but it's disappeared. Someone ____________ stolen it.

I'm sorry, but Samantha is not here. It's 5:00 p.m., so she _________________ already left the office

He _________________ arrived by now. It's only a 20 minute journey!

He _______________ bought a new car. He told me he didn't have any money.

Sarah __________________ been so happy when she found out she was being promoted!

She __________ been tired because she fell asleep in class.

If they left at 9, they ______________ already arrived.

They ___________ gone to the park because it was raining all day.

She ____________________ studied really hard. She passed all her exams with excellent grades.

He _______________ known it was your birthday. Otherwise, he would have wished you a happy day.

The boss is in a terrible mood. The meeting _________________ been good.

Andrew didn't study for the test, but he's passed. I think he ________________cheated.