Can you not guess? asked Poirot, smiling. 
Poirot has the ability to speak in English.
Poirot has never before smiled in his entire life.
No one realizes that the Roman empire had serious internal weaknesses.
Llincoln was supposed to get on the train at the border of Large and Little.
You may be prevented from bringing certain plants home with you.
The construction driver refused to drive the equipment.
I kept my face motionless.
People are waiting to get service.