_____ I admit that there are problems, I don't' think that they cannot be solved.
| A．Unless | B．Until | C．As | D．While |
Youth is often ______ with freshness, happiness and other beautiful things.
| A．shared | B．provided | C．compared | D．associated |
The people, ______ had been damaged by the flood, were given help by the Red Cross.
| A．all whose homes | B．all of whose homes | C．all their homes | D．all of their homes |
Over 20% of the students at that school _____ the habit of smoking, which is beyond imagination.
| A．is | B．are | C．has | D．have |
______ of danger on the road at night ,the girl had to go home with a friend _______ her.
| A．Being warned; accompanied | B．Having warned; accompanying |
| C．Warning; accompanying | D．Having been warned; accompanying |
Mr. Green, for _____ life had been very hard, donated his possessions to earthquake-hit families in Sichuan.
A. whose B. whom B. which D. that