______with such a difficult problem ,he didn’t know what to do .
| A．Faced | B．Faced to | C．Faced | D．Facing with |
Not until they left school ______ how much their teachers loved them and helped them.
| A．they realized | B．had they realized | C．they would realize | D．did they realize |
. Although the teacher didn’t mention any names, everybody in the class knew who he was ________.
| A．attending to | B．turning to | C．referring to | D．talking to |
When caught ______ in the exam, he begged for the teacher’s pardon and tried ______ punishment.
| A．cheating; escaping | B．cheating; to escape |
| C．to be cheating; escaping | D．to be cheating; to escape |
Experts predict that the earthquake and tsunami will _________ among the costliest natural disasters on record.
| A．clarify | B．group | C．separate | D．rank |
It is the best for this kind of plant to grow in ______ is warm and rainy.
| A．that | B．what | C．which | D．where |