单选题 The strength of doing physical exercise is ______.

单选题 If you renew an activity, you______it again.

单选题 When someone recites a poem or other piece of writing, they say it_____ after they have learned it.

单选题 The new smartphone is going to be released which is _______to people next week.

单选题 He said that he would definitely pass the exam but _________.

单选题 To make random investigation is to choose the sample______.

单选题 A sentimental woman tends to be _____.

单选题 Regular visits from a social worker can be of immense value to___.