Just like weather, life_______ be sunny and beautiful all the time.
—When will the second class begin?—________ two minutes.
I’m very proud of that Beijing is one of __________ cities in the world.
—Who helped Mark with his English?—_________, he taught himself.
Qingdao is a good place for summer vacation. My father ___________ there several times.
Remember to wash your hands __________ you have meals.