(19) 다음 중 빈칸에 what 을 쓸 수 없는 것은?
1) ___________ I can do now is to build a strong house.
2) I don't know the thing __________ he wants for his birthday.
3) You need to try to find ___________ keeps you motivated.
4) I couldn't believe ___________ my grandfather tole me.
5) You gave me _____________ I was looking for.