He f____ off his bike and hurt his leg yesterday.
The snake b____ my hand last week.
I go to the park once or t____ a week.
You must pay a______ to your handwriting (书写)
________ (突然) a young man ran by me when I was sitting on the grass.
The _____ (污染) in this city is much worse than it was two years ago.
What’s the _____ (温度)?It’s between minus five and ten degrees.
_____ (数十亿) of people all over the world watched the football match last night .
Bring your umbrella because it may _____ (下雨) later.
The doctor asked me to take the ______ (药物).