1.edison was _____in science when he was young .

1.edison was _____in science when he was young .
A .interesting
B .interested
C .interest
D .to interest
2.thank you for _____us so _______.
A .teaching ;good
B .teach ;well
C .teach ;good
D .teaching ;well
3.cheer up scientists may well invent ways _______these problems .
A.to solve B .solving
C .solved D.solves