In the dark street, there wasn’t a single person ___ she could turn for help.
She had just finished her homework_________her mother asked her topractice playing the piano yester-day.
The manager told her_________to post the letters by 3:00 in the afternoon.
Theboy wanted to ride his bicycle in the street, but his mother told him_________
The general ordered all the soldiers _________ alert (警惕的).
Theboss_________all the employees to work withgreat care.