John promised his doctor henot smoke, and he has smoked ever since.
A total of 35 Chinese universities rank among the world’s 500 best in a ranking _____ by China's Shanghai Jiao Tong University on Monday.
Well, it’s up to you, Aunt Ellen, _____ you stay or go.
We’ll have to race _____ the clock to complete the work on time.
Cheer up! Never let your failures _____ trying harder.
— What was the trouble with you the day before yesterday? — When I practiced running, my strength _____ and I fell onto the ground.