Practice makes perfect______Mr Black passed the driving test easily

My sister is still afraid of the dark, _____she is already 15 years old.

In the dark street there wasn’t a single person _____ Mary could turn for help.

A warm thought suddenly came to me _______ I might use the pocket money to buy some flowers for my mother’s birthday.

27．As Senior 3 students, it is important to________a good state of mind.