ht not contact the rescue team._____, the rescue team itself might get lost.

What a wonder! They have finished _______ half of the project in such a short time.

From what she has done we can predict that she is ______enough to make up her own decision and behave in a proper way.

The oldcouple decided to ______ a boy and a girl though they had three of their own.

The box is so heavy that he cannot lift it. _______, he is only a ten-year-old child.