In order to go to a key university, I must______my study from now on.
It is only by practising English for several hours every day _________ be able to use it freely.
Eric fell ill suddenly but was so foolish. He didn't even have ________ common sense to send for ______ doctor.
If you already have health insurance,the only change ________ you'll see under my plan is lower premiums.
Paul attends very ________ meetings,and when he does,he has very ________ to say.
It is believed that health problems are closely connected with bad eating habits and a _______ of exercise.