Use the right forms of the verbs to add, to ask,

Use the right forms of the verbs to add, to ask, to wonder, to explain, to tell, to say, to want in these sentences
1)Boris ..... to his sister that he had already spoken to their trainer
2)Margaret ..... to know if they had finished building their garage
3)Andrew ..... if my cousin gad flown to America
4)Albert ..... that he had lost his textbook
5)Ann ..... to the children what they should do.
6)We ..... that we were leaving for Moscow from Moskovsky railway station at seven
7)We ..... that we didn't want to be late for the train