Odpowiedź:
~zad.1~
1. A What time the museum opens?
B It opens at ten o'clock.
A Yes, It closes at five o'clock.
2 A What time the next train leaves?
B It leaves at twenty minutes(...)
3. A What time the match starts?
B It starts at 2p.m.
A When their plane arrives?
B It arrives at Monday afternoon.
Wyjaśnienie:
zad.1 - do rodzaju nijakiego na końcu dodajemy -s, zad.2 postaram się zrobić zaraz w komentarzu