What are you going to do this weekend—________.If time permits，I may go to Shanghai with my friends.

Once you ______ the habit of smoking, it is hard toquit.

Are you going to find a job or go on withyour study to get a doctor’s degree —I have had enough of ______ life. I wantto find a job.

___ at sums than Jean, but better athistory.

She tried to ______ the frightened boy,but failed.[ ]