—Jim is very sick these days. He coughs so badly.—In my opinion, he really ________ listen to the doctor and cut down on smoking.
My elder sister ____ me into buying the red mountain bike.
Although I often send e-mails to Tom, I have never seen him _____________.
The police asked him to _________what he had seen.
The number of people in the party _____fifty, but a number of them ____ absent for different reasons.
He asked us ________ we saw the lost cat or not.