【推荐1】— Would you mind lending me a pen?
— I am very sorry ________ I have none myself．

A．and

B．but

C．so

D．or

【推荐2】The advantage is that ______ there is a new illness some of these animals may die, ______ others will survive and pass on the ability to resist that disease to the next generation.

A．while; and

B．if; but

C．whether; or

D．when; for

【推荐2】The young man kept calling for ambulances because his mother’s illness was ________ that he couldn’t bear to wait a single minute.

A．all

B．so

C．much

D．such