He tried to join the army but was _____ because of poor health, which made him depressed.
—What do you want to do next? We have half an hour before the basketball game starts. —__________. Whatever you want to do is fine with me.
Those who have __________ floods and sandstorms knows the importance of environmental protection.
I'm afraid I'll have to; my mom is calling me for supper.
To our relief, the patient's condition is __________
I couldn't __________. The line was busy.