The students were in Russian museum
Students - множественное число, используем were
Если число единственное - то was.
11.2 2 - saw, 3 - played, 4 - paid, 5 - visited, 6 - bought, 7 - went, 8 - thought, 9 - copied, 10 - knew, 11 - put, 12 - spoke
11.3 2 - got 3 - had 4 - left 5 - drove 6 - got 7 - parked 8 - walked 9 - checked 10 - had 11 - waited 12 - departed 13 - arrived 14 - took
11.4 2 - lost her keys
3 - met her friends
4 - bought two newspapers
5 - went to the cinema
6 - ate an orange
7 - had a shower
8 - came to see us
My mum likes apples,but she doesn't like batter.
My dog likes meat,but he doesn't like orange.
My friend like coke, but he doesn't like lemon.
My dad like juise,he but doesn't like tea.
Twenty thirty forty fifty sixty seventy eighty ninety one hundred