1.In ______ to English,you'd better learn another foreign language.A.addition B.add C.additioned D.additional

1.In ______ to English,you'd better learn another foreign language.A.addition B.add C.additioned D.additional
2.It's________ to run into danger for nothing.
A.child B.childish C.childhood D.childishly
3.We had a long wait,but it was_______ because we got the ticket.A.worth B.efficient C.worthwhile D.valuable