Part Ⅰ Complete the following sentences with the best choice. He tried to work hard to ________ the lost time.
__________ is well known, the key to success lies in hard work.
The young man worked very hard and soon began to _________.
To master a foreign language like English requires hard work, so you _____ study too hard.
The young man worked very hard and earned some money to ______ his travelling expense.
Whether a young man works hard or not ______ to his further development .
The teacher managed to ________ the students the importance of hard work.
For social robots to work successfully, they have to (accept) ________ by humans.
We must work hard to____ a good knowledge of English.
32 Scientists study how photosynthesis works because they want to_____.
David ______ his company's success to the unity of all the staff and their persevering hard work.
I don't think ______ possible to master a foreign language without much hard work.
Up to now, he______very hard-working.
To master a foreign language requires hard work, so you______study too hard.
If they hadn’t been working hard in the past few years，things__________so smoothly now．
Paul doesn't have to be made_____. He always works hard.
If businessmen are taxed too much, they will no longer be motivated to work hard, with the result that incomes from taxation might actually ______.
From the participants' response to the videotape, it can be said that they could hardly______.
He gave his work to his friend to_____, because he found it hard to see his own mistakes.
The experts worked very hard to keep up______the latest development in their own fields.
In order to finish the work in time, they always worked far______the night.
At the end of his speech, the school master encouraged the children to work hard______
Only by working hard ___ to succeed.
It is hard to distinguish the twins because they _____（）
