.
Because of the sharp drop of birth rate, the number of students sitting the college entrance exams ______ all the time
A．is decliningB．has declined
C．have been declinedD．were declining
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：單選題

.
She is the only one of those women archaeologists who ________ chosen to go to Loulan.
A．hasB．has beenC．have beenD．had been

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

——Mike, have you heard that Mr. Black knocked down a girl and hurt her badly yesterday morning.
——Yeah. He_____too fast to stop his car while the girl was crossing the street.
A．was drivingB．drove C．had drivenD．would drive

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


—Have you found the problem with the computer ?
—Sorry. It ______ .
A．is checkedB．is being checkedC．has checkedD．was being checked

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

.
We won’t know how much food to buy until we decide how many people ________.
A．were comingB．a(chǎn)re comingC．have been coming D．had come

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

.
Many wild animals in the world _____ , so we must take measures to protect them.
A．a(chǎn)re dying outB．have died outC．died outD．die out

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Something _______ wrong with the machine, and it _______ not work.
A．being; couldB．going; shouldC．were; mightD．went; would

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

.
Oh, Jane,you ’ve broken another glass.you ought ________when you washed it.
A．be carefulB．to be carefulC．to careD．to have been careful.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


Almost all the houses in the city are said ________ in the terrible earthquake.
A．to destroyB．having destroyed
C．to have been destroyedD．to have destroyed

查看答案和解析>>

同步練習(xí)冊答案