根据句子结构的语法性,在下面空格处填入一个适当的词或使用括号中词的适当形式填空。
_________ (hear) their teacher's voice, the pupils stopped talking at once.
He _________ (bring) up in North Yorkshire by his grandmother .
It may be _________ (believe), but it's the truth.
She was so tired that she didn't even have the _________ (strong) to stand up.
She had her hair cut last night, now it is _________ (thin) and shorter.
Thousands of patients have benefited _________ the new medicine.
I find _________ strange that she doesn’t want to go.
Great changes _________ (take) place in China over the past few years.
Those _________ keep working hard will soon be successful.
We tried to save the building, _________ it was a hopeless task.
Please call me on your _________ (arrive) at the hotel.
She did not know _________ had happened.
With time _________ (go) by, my memory seemed to get worse.
I have borrowed _________ useful book from the library to prepare for my coming exam.
People began looking across to see_________ the noise was coming from.