根据句意和提示写出单词，完成句子。每空一词。We should brush our ________________ (牙齿) after each meal.
On his mother’s ________________ (四十) birthday, he gave her a card and some flowers.
Does your father like _________________ (看) newspapers?
You may _________________ (借) the book for two weeks.
Now mankind is exploring those ___________________ (未知的)outer space in many ways.
将下列句子中汉语部分译成英语，注意使用适当的形式。My parents are always thinking about me （一直）
（首先），I have something good to tell all of you.
If you classmates make a mistake in class, you shouldn’t(嘲笑) him or her.
How often do you help your mother with the housework?
(一周一次)Our life is (充满)chance, but there are also a lot of chanllenges.
根据句意,或汉语提示，写出各单词的正确形式，每空填一词。These young people are all the _________ (先锋) in this new field.
The ___________(决定) you have made don’t seem so good. You need to be more thoughtful.
The scientists have ____________ (发现) a new way to solve the problem.
Knowing how to use ____________ (字典) will be of great help to learning English.
He _______ (怀疑) if he would learn anything new from Marie when he was at school.
根据句意，用所给动词的适当形式填空。She wonders if there _______(be) a flower show next week.
At last several of the runners ________(fall) behind in the race.
Jack devotes as much time as he can to__________(help) others.
The railway ________(connect) Qinghai to Tibet is the longest plateau (高原) railway in the world.
If you _______(not be) careful enough when crossing the road a car may hit you.
根据句意，用所给单词的适当形式填空。How ____________you are to make such a mistake! (careless)
I can’t understand his(silent) on such an important matter.
If you take more exercise, you will be (health).
To everyone’s , still many people are trapped under stones after the earthquake. (sad)
Li Ming goes to see his grandparents at a ________ (fix) date every month..
根据句意和汉语提示写出单词，完成句子。He is one of the __________(先锋 ) of modern science.
Food safety ________________ (影响) our everyday life.
Reading after the tape can improve our________(发音).
The product of this company has reached the international ____________ (标准), so it sells well all over the world.
His parents died when he was very young, but love was never _________ (缺席的) from his childhood.