---Why didn't you tell me the fact earlier?
---I _____ it for granted ______ you knew it.
| A．thought; as | B．considered ; as | C．regarded; that | D．took; that |
It’s quite obvious that the aging population in China will cause _____heavy pressure on _____whole society in the future.
| A．/, the | B．the, / | C．a, the | D．a, a |
—Next Monday is my birthday.
—Is that so? ________
| A．I can’t believe my ears. | B．I’m so glad to hear that. | C．What presents do you want? | D．Many happy returns of the day! |
On July 1st, 1921, the red boat on South Lake in Jiaxing ________ the birth of the Communist Party of China,
which marked a new start for Chinese people.
| A．witnessed | B．gave | C．experienced | D．founded |
Scientists have discovered amazing evidence showing how the human body rebuilds _______ while we sleep.
| A．us | B．ourselves | C．it | D．itself |
—Why didn’t you remind him of the possible danger?
—But what _______ otherwise? He never listens to me.
| A．could I do | B．could I have done | C．should I do | D．must I have done |