——It was the drug,not the disease,that killed the boy.——He would be still alive today if he ________ that drug.
I ____ to go for a walk, but someone called and I couldn’t get away.
I’d like to live somewhere ____ the sun shines all year long.
——The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job? ——____ my students have a try?
——What should I wear to attend his wedding party? ——Dress ____ you like.
He is only too ready to help others, seldom, ____, refusing them when they turn to him.