To meet the challenge, the young people preferred _______ heavier work to do in their spare time.
A．to have  given |
B．to be giving | C．having give | D．to be given |
Some companies are thinking of ways to save natural _____ by making better use of the water used in the bathroom.
| A．resources | B．sources | C．power | D．energy |
One should have a _______ of right and wrong.
| A．feeling | B．knowledge | C．sense | D．idea |
I like getting up very early in summer. The morning air is so good.
| A． | to be breathed | B． | to breathe |
| C． | breathing | D． | being breathed |
-What fruit is in season now?
-Grapes and peaches,（）.
| A． | I know | B． | I think | C． | I see | D． | I feel |
-Sorry, I made a mistake again.
-Practice more and you'll succeed.
| A． | Never mind | B． | Certainly not |
| C． | Not at all | D． | Don't mention it |