This problem is said _______ three times, but he still can’t understand it.
| A．to have been explaining | B．to have explained |
| C．having been explained | D．to have been explained |
By 2025, when the number of consumers worldwide has reached 4.2 billion, people with high income will be, for the first time, more than_______struggling to meet basic needs.
| A．one | B．that | C．ones | D．those |
It is really important for parents to reach a ______ between what they want and what their kids desire.
| A．conclusion | B．compromise | C．communication | D．consensus |
I didn’t like the color of the coat my mother bought me, so she went back to _______ it for another one.
| A．replace | B．exchange | C．afford | D．measure |
He was seriously injured in the traffic accident. _______ is now no possibility _____ he will make a full recovery.
| A．It; whether . | B．It; that | C．There; whether | D．There; that |
At night, plants _________carbon dioxide and at the same time _________oxygen. So, we may put some in our bedrooms to purify the air.
| A．take in, give out | B．take up, give off |
| C．take in, give in | D．take off, give up |