_____ he can pass the driving test is quite uncertain.

Is Andy _____honest student–I think so. Do you know he donates 200yuan to Project Hope every year.

I arrived late and missed the flight. I _____the traffic to be so heavy. [ ]

Has David finished his project yet— I guess not. He ________ on it at lunchtime. Do you want me to confirm it

Such problems as high blood pressure and heart trouble are _________ features of old age.